Iron oxides are cosmetic pigments that originate from natural minerals and are considered both synthetic and mineral when refined. Used to tint sunscreens, create complexion-enhancing makeup shades, and help protect skin from visible light.
Is iron oxide safe in cosmetics?
Safety Information: – The Food and Drug Administration (FDA) lists Iron Oxides as a color additive exempt from certification. Iron Oxides are safe for use in coloring products, including cosmetics and personal care products applied to the lips, and the area of the eye, provided they meet certain specifications. ). The Cosmetic Ingredient Review (CIR) has deferred evaluation of this ingredient because the safety has been assessed by FDA. This deferral of review is according to the provisions of the CIR Procedures.
What are the side effects of iron oxide in cosmetics?
Are Iron Oxides Safe? – As we have already mentioned, iron oxides are compounds that naturally occur in nature, which makes them 100% natural. However, the iron oxide that occurs naturally in an uncontrolled setting very often contains traces of heavy metals, such as mercury, arsenic, and cadmium,
- These elements are undesirable in cosmetic products because they can be harmful to our health.
- This is why the iron oxides that are used in cosmetic formulas are mostly produced synthetically.
- The word ‘synthetic’ is usually associated with something bad, but in this case, the ingredient is produced in a lab for safety reasons.
The strictly controlled manufacturing conditions are necessary to avoid the inclusion of impurities that would otherwise occur in naturally produced iron oxides. Their basic composition remains the same i.e. what lab workers do is re-create the naturally occurring process of oxidation in a controlled environment, free of heavy metals and other potentially harmful ingredients.
Apart from that, after oxidation, synthetically produced iron oxides are purified, so they can be 100% free of irritants and any undesirable compounds. What To Try: Organic BB Cream While iron oxide pigments in topical cosmetic products are unmatched in terms of durability and pigmentation, there is one tiny disadvantage of using them in products that are placed beneath the skin (permanent makeup or temporary tattoos).
When iron oxides are placed under the dermis, the iron is gradually absorbed by the blood vessels, which may cause the color to change and even fade away. Still, this is rather an aesthetic issue and poses no threat to human health. view now Brightening Organic Skincare Essentials view now Brightening Organic Skincare Essentials view now Commiphora Plumping Serum
Are iron oxides natural?
What Are Iron Oxides? – Iron oxides are skincare and cosmetic ingredients that are used to color formulations. Iron oxides are used in three basic shades: black (CI 77499), yellow (CI 77492) and red (CI 77491). Iron oxides are made up of iron and oxygen and have been used as coloring agents in cosmetics since the early 1900s.
- Iron oxides occur naturally, for example, rust is a type of iron oxide.
- Red iron oxide can be naturally derived from the mineral hematite; yellow iron oxides come from limonites such as ochers, siennas, and umbers; black iron oxide is obtained from the mineral magnetite.
- However, the iron oxides used in cosmetics are usually synthetic.
There are a total of 16 different iron oxides used in cosmetics. In addition, to use in cosmetics, iron oxides can be found in paints, coatings, and colored concretes. If you’re researching i ron oxides, you might be looking for clean yet effective skincare.
Is iron oxide approved by FDA?
Iron Oxides Approved by the FDA On March 20th, 2015; Red, Yellow and Black Iron Oxides were approved as ‘Exempt from Certification’ (i.e. Natural) colors by the FDA for use in soft and hard candy, mints, and chewing gum. This action is in response to a petition filed by Wm.
- Wrigley Jr. Company.
- Natural Colors can often face stability issues, in some cases creating formulation challenges.
- Iron Oxides are excellent replacements for synthetic FD&C colors in terms of stability, shade and cost-in-use.
- Stability: Iron Oxides, which have been approved in Europe for use in food for years, are extremely stable.
They have no chemical or physical reaction to acid, heat, light, moisture, oils, oxygen, or pH. This makes them ideal for confection applications because of the differing process variables involved. Shade:
Red Iron Oxide is a very close shade match to FD&C Red #40. Yellow Iron Oxide is not quite as bright as Yellow #5, but it produces a mustard yellow shade. Black Iron Oxide is a ‘TRUE’ black, meaning it completely absorbs all light wave lengths. In contrast a Synthetic blend of Red #40, Yellow #5 and Blue #1 will not absorb all light wavelengths, keeping it from being a ‘TRUE’ black.
Red, Yellow and Black Iron Oxides can be blended with each other and any other natural color to achieve a wide range of color shades. Because they function as pigments, the door is now open to natural colors for direct contact, solvent-based, confectionery inks.
- Cost-in-use: Iron Oxides are very economical compared not only to other natural colors but also synthetic colors due to their strong tinting strength, which lowers the cost-in-use.
- Usage levels are self-limiting as long as they are consistent with GMP (Good Manufacturing Practice).
- Iron Oxides have similar plating characteristics to a Synthetic Lake, which makes them great for use in compressed tablets and compound coatings.
Additionally, the pigments are perfect for panning, hard candy, gummies, liquorice and chewing gum. Iron Oxides may not be a match for every brand, because consumer perception of them are not as favorable as colors derived from botanical sources. However, they do offer new options that will make natural color conversion for some confection brands more efficient.
Is iron oxide rust?
Rust is the term we use to describe red iron oxides produced when ferrous metals corrode. Rust is the common name for the chemicals that result when iron reacts with oxygen and water.
What is iron oxide commonly known as?
Iron oxide, also called ferric oxide is an inorganic compound with the chemical formula Fe 2 O 3.
Is iron oxide beneficial?
Abstract – Iron oxide is an important biological agent that has a key role in medical processes; however, the mechanism whereby it provides iron for human and animal cells and its biological uses remains unclear. We aimed to evaluate the effects of oral iron oxide on serum iron status and compare the results with those of iron sulfate as a reference salt.
Fifteen adult rabbits were divided into 3 groups of 5 each: control group, iron sulfate group, and iron oxide group. The groups received doses of 3.3, 10, and 33 mg/kg in 3 experiments. Venous blood samples were obtained just before the oral administration of iron sulfate and iron oxide (3.3 mg/kg). More blood samples were taken 3 times at the time points of 1, 6, and 12 hours after the administration of the solutions.
Serum was separated for the measurement of iron (Fe) and total iron-binding globulin (TIBG) with routine methods. One week later, the same experiment was repeated with 10 mg/kg of iron sulfate and iron oxide; and 1 week later after the second experiment, again the same experiment was repeated with 33 mg/kg of iron sulfate and iron oxide.
- The results showed that 33 mg/kg of iron sulfate 1 hour after treatment caused a significant difference in the Fe and TIBG levels between all the groups (P=0.014 for Fe and P=0.027 for TIBG).
- Our data showed that the absorption of iron oxide was similar to that of ferrous sulfate and in high doses was as useful as iron supplement.
Keywords: Ferric oxide, Rabbit, Blood iron, Ferrous sulfate What’s Known
Iron oxide is an important biological agent that has a key role in medical processes and used as iron supplements.
What’s New
Although the role of iron oxide in medical processes is known, however, the mechanism of providing iron for biological usage was unclear. Our results clarified the effect of oral iron oxide on serum iron status and related parameters.
What is iron oxide in sunscreen?
In mineral sunscreens, iron oxide is used to reduce whiteness and make the product more cosmetically elegant. In addition to its color corrective properties, iron oxide can also protect your skin from high-energy visible (HEV) or blue light.
What are examples of iron oxide?
2.4.7.6.1 Iron oxide nanomaterials – Iron oxides can be found within a wide range of forms in nature, the common species, such as hematite (α-Fe 2 O 3 ), magnetite (Fe 3 O 4 ), and maghemite (γ-Fe 2 O 3 ), Recently, a large body of research has been allocated to the fabrication and usage of iron oxide NPs (IONPs), revolving around new features and goals as a result of their nano-size, the ratio of high SSA to volume, and superparamagnetism,
The potential of working with matters on an atomic scale, as well as the facilitation of synthesis, coating, or modification, can bring about unprecedented options, Moreover, paired with the potentials of the field of biotechnology, IONPs that enjoy biocompatibility, low toxicity, and chemical inertness can prove rather quite useful,
Fig.2.36 represents the adsorption/reduction governing mechanism in the MNPs, 
Fig.2.36, Schematic uptake and reduction mechanism of the MNPs, Magnetism, itself a notable physical property, interacts with the contaminants of water by affecting their physical properties, thus helping independently toward purifying water. As a result, magnetic separation is usually combined with the treat water and help with the clean-up efforts of the environment,
The role of carbon-encapsulated MNPs in the removal of Cu 2 + and Cd 2 + contaminants was studied by Bystrzejewski et al. In this research, ion uptakes managed to reach 95% for Cu 2 + and Cd 2 +, a noticeably higher than ACs’ elimination ability. This result confirmed the hypothesis that modified-IONPs are highly suitable for removing HMs from the aquatic system.
Surface site binding is the basis of operation when one aims to carry out pollutant uptake from effluents using modified iron oxide NMs. NMs, thanks to the addition of novel rectification, have greater efficiency. MNP-NH 2, for instance, is a new magnetic nanosorbent which helps to separate Cu 2 + ions from aqueous solution through covalently binding 1,6-hexadiamine on the surface of Fe 3 O 4 NPs,
As per the equation that follows, chemisorptions took place on the surface of MNP-NH 2 between Cu 2 + and NH 2 groups. Moreover, the consistency and reusability of the final product nanosorbents were promising, and the researchers managed to keep constant the adsorption capacity of MNP-NH 2 (approximately 25 mg/g).
In this way, the potential of using such nanosorbents was confirmed both for removal efficiency and further practical application. Based on relevant investigations, it was shown that iron oxide NMs were effective in removing a variety of HMs, such as Pb 2 +, Hg 2 +, Cd 2 +, Cu 2 +, etc.
| Nanosorbents | Ligands | HM | Adsorption capacity | Ref. |
|---|---|---|---|---|
| Mesostructured silica magnetite | –NH 2 | Cu(II) | 0.5 mmol/g for Cu (II) | |
| Magnetic iron–nickel oxide | – | Cr(VI) | Maximum of 30 mg/g uptake capability for r(VI) | |
| Montmorillonite-supported MNPs | –AlO; –SiO | Cr(VI) | 15.3 mg/g for Cr (VI) | |
| PEI-coated Fe 3 O 4 MNPs | –NH 2 | Cr(VI) | The maximum adsorption capacity for Cr(VI) was 83.3 mg/g | |
| δ-FeOOH-coated γ-Fe 2 O 3 MNPs | – | Cr(VI) | The Cr(VI) adsorption capacity determined to be 25.8 mg/g | |
| Flower-like iron oxides | – | As(V), Cr(VI) | The As(V) adsorption capacity was 5.3 mg/g | |
| Hydrous iron oxide MNPs | – | As(V), Cr(VI) | 8 mg of arsenic per g of adsorbent | |
| Fe 3 O 4 –silica | Si–OH | Pb(II), Hg(II) | The removal efficiency was 97.34% and 90% for Pb(II) and Hg(II) | |
| Amino-modified Fe 3 O 4 MNPs | –NH 2 | Cu(II), Cr(VI) | The maximum adsorption capacity was 12.43 mg/g for Cu(II)ions and 11.24 mg/g for Cr(VI) ions | |
| m-PAA-Na-coated MNPs | –COO | Cu(II), Pb(II), et al. | Adsorption capacity: Cd(II) (5.0 mg/g); Pb(II) (40.0 mg/g); Ni(II) (27.0 mg/g) and Cu(II) (30.0 mg/g) | |
| Poly- l -cysteine coated Fe 2 O 3 MNPs | –Si–O; –NH 2 | Ni(II), Pb(II), et al. | The recovery of the tested metals were almost all above 50%, even the removal efficiency of Ni(II) 89% |
Much like the absorption of HMs, surface exchange reactions are the means through which organic pollutants are absorbed to the point where surface functional sites are occupied fully, after which time pollutants were able to diffuse into adsorbents to move unto further interactions with functional groups.
If one were to utilize this mechanism, a development of surface modification would be crucial with regard to the development of NMs concerning the removal of organic pollutants. Enhancing absorption relies on the chemical treatment and modification of NMs. An example of this requirement would be the importance of carbon-coated Fe 3 O 4 NPs (Fe 3 O 4 /C) in the extraction of trace PAHs,
In comparison with pure Fe 3 O 4 NPs, improvement significantly increased with regard to the experimental PAHs on Fe 3 O 4 /C nanosorbents; moreover, with regard to PhA, FluA, Pyr, BaA, and BbF, removal efficiencies of purpose compounds exceeded 90%.
Furthermore, this method enables the modification of Fe 3 O 4 /C NPs with a hydrophilic surface provided that carboxyl and hydroxyl groups are present. Not only these NPs can be dispersed in the solution steadily for feasible uses, but they also decrease analytes’ irreversible adsorption in order to influence the issue of desorption considering carbon materials.
Read full chapter URL: https://www.sciencedirect.com/science/article/pii/B9780128188057000096
What are the two most common iron oxides?
In petrological terms, ‘Iron oxides’ refers usually to the two main iron oxide minerals hematite and magnetite and, to a lesser extent, the rarer oxide mineral maghemite.
What is the alternative to iron oxide?
Manganese ferrite pigment : Carbon black, iron oxide alternative.
Where do iron oxides come from?
3. Conclusions – Genesis, uses and environmental implications of iron oxides and ores have been considered in this chapter. Natural iron oxides occur extensively and are obtained from deposit of various types. Hematite is mainly sourced from iron ore of sedimentary origin including hydrothermal, metamorphic and volcanic deposits.
Mafic and ultramafic rocks are linked with magnetite. This is also associated with skarn-type metamorphic deposits. A mixture of ferrous or ferric oxides constitutes iron oxides provided for pigments. These may contain impurities of manganese oxides, clay and silica. Oxides of iron remain one of the pigments of natural origin including titanium dioxide.
They are highly valued because they possess non-toxic, inert, opaque and weather-resistant properties. Oxides of iron constitute the main component of products in the pharmaceutical industry, paint industry, plastic industry, ink industry and cosmetic industry.
- Oxides containing mica provide anticorrosion properties.
- Natural pigments which qualify for these applications are limited in occurrence.
- Thus, synthetic iron oxides obtainable from iron compounds have better uniformity, purity of color, consistency and strength.
- Beneficiation processes of iron ore generate dust in the atmosphere, acid mine drainage in the ecosystem and metallic iron for steelmaking.
The main sources of air contamination during the beneficiation processes are emission of poisonous gases such as nitrous oxide, carbon dioxide, carbon monoxide and sulfur dioxide. Beneficiation process requires dissolution of minerals surrounding the ore and the release of metals and cement matrix into courses of water.
These generate acid leading to acid mine drainage. Excess acidity and metal load in the ecosystem result in the loss of ecological balance and health hazards. Therefore, there is a need for valuation of the environmental impact in the planned beneficiation cycle. Sustainable beneficiation is required to reduce its impact on the natural, social or economic environment.
Reduction of heavy metal load from sewages, before their issue to the ecosystem, is a significant problem of contemporary wastewater handling. Ochre and oxides of iron have been used to test the removal of heavy metals including copper and zinc from contaminated aqueous environment.
Is iron oxide artificial?
Physical Description – Synthetic iron oxide consists of any one or any combination of synthetically prepared iron oxides, including the hydrated forms. Iron oxides are produced from ferrous sulfate by heat soaking, removal of water, decomposition, washing, filtration, drying, and grinding.
Which iron oxide is best?
Notes – Synthetic red iron oxide is the most common colorant in ceramics and has the highest amount of iron. It is available commercially as a soft and very fine powder made by grinding ore material or heat processing ferrous/ferric sulphate or ferric hydroxide.
- During firing all irons normally decompose and produce similar colors in glazes and clay bodies (although they have differing amounts of Fe metal per gram of powder).
- Red iron oxide is available in many different shades from a bright light red to a deep red maroon, these are normally designated by a scale from about 120-180 (this number designation should be on the bags from the manufacturer, darker colors are higher numbers), however, in ceramics these different grades should all fire to a similar temperature since they have the same amount iron.
The different raw colors are a product of the degree of grinding. In oxidation firing iron is very refractory, so much so that it is impossible, even in a highly melted frit, to produce a metallic glaze. It is an important source for tan, red-brown, and brown colors in glazes and bodies.
Iron red colors, for example, are dependent on the crystallization of iron in a fluid glaze matrix and require large amounts of iron being present (eg.25%). The red color of terra cotta bodies comes from iron, typically around 5% or more, and depends of the body being porous. As these bodies are fired to higher temperatures the color shifts to a deeper red and finally brown.
The story is similar with medium fire bodies. In reduction firing iron changes its personality to become a very active flux, Iron glazes that are stable at cone 6-10 in oxidation will run off the ware in reduction. The iron in reduction fired glazes is known for producing very attractive earthy brown tones.
- Greens, greys and reds can also be achieved depending on the chemistry of the glaze and the amount of iron.
- Ancient Chinese celadons, for example, contained around 2-3% iron.
- Particulate iron impurities in reduction clay bodies can melt and become fluid during firing, creating specks that can bleed up through glazes.
This phenomenon is a highly desirable aesthetic in certain types of ceramics, when the particles are quite large the resultant blotch in the glaze surface is called a blossom. Iron oxide can gel glaze and clay slurries making them difficult to work with (this is especially a problem where the slurry is deflocculated ).
Iron oxide particles are very small, normally 100% of the material will pass a 325 mesh screen (this is part of the reason iron is such a nuisance dust). As with other powders of exceedingly small particle size, agglomeration of the particles into larger ones can be a real problem. These particles can resist break down, even a powerful electric mixer is not enough to disperse them (black iron oxide can be even more difficult).
In such cases screening a glaze will break them down. However screening finer than 80 mesh is difficult, this is not fine enough to eliminate the speckles that iron can produce. Thus ball milling may be the only solution if the speckle is undesired. Red iron oxides are available in spheroidal, rhombohedral, and irregular particle shapes.
Some high purity grades are specially controlled for heavy metals and are used in drugs, cosmetics, pet foods, and soft ferrites. Highly refined grades can have 98% Fe 2 O 3 but typically red iron is about 95% pure and very fine (less than 1% 325 mesh). Some grades of red iron do have coarser specks in them and this can result in unwanted specking in glaze and bodies (see picture).
High iron raw materials or alternate names: burnt sienna, crocus martis, Indian red, red ochre, red oxide, Spanish red. Iron is the principal contaminant in most clay materials. A low iron content, for example, is very important in kaolins used for porcelain,
- One method of producing synthetic iron oxide is by burning solutions of Ferric Chloride (spent pickle liquor from the steel industry) to produce Hydrochloric Acid (their main product) and Hematite (a byproduct).100% pure material contains 69.9% Fe.
- We have received some info about the ability of CaO to bleach the color of iron in bodies (as noted by Hermann Seger).
This relates to a chemical reaction between lime, iron, and some of the silica and alumina of the clay, to form a new buff-coloured silicate. He found that this bleaching action is most marked when the percentage of lime is three times that of the iron.
Who uses iron oxide?
Introduction – Nanoparticles (NPs) are at the forefront of rapid development in nanotechnology. Their exclusive size-dependent properties make these materials indispensable and superior in many areas of human activities.1 Being the most current transition metal in the Earth’s crust, iron stands as the backbone of current infrastructure.2 However, in comparison to group elements such as cobalt, nickel, gold, and platinum, iron oxides are somewhat neglected.2 Iron and oxygen chemically combine to form iron oxides (compounds), and there are ~16 identified iron oxides. In nature, iron(III) oxide is found in the form of rust.3 Generally, iron oxides are prevalent, widely used as they are inexpensive, and play an imperative role in many biological and geological processes. They are also extensively used by humans, eg, as iron ores in thermite, catalysts, durable pigments (coatings, paints, and colored concretes), and hemoglobin.4 The three most common forms of iron oxides in nature are magnetite (Fe 3 O 4 ), maghemite (γ-Fe 2 O 3 ), and hematite (α-Fe 2 O 3 ). These oxides are also very important in the field of scientific technology and are therefore the subject of this review.5 NPs composed of ferromagnetic materials and with size <10–20 nm exhibit an inimitable form of magnetism, ie, superparamagnetism. The ferromagnetic materials include elemental metals, alloys, oxides, and other chemical compounds that are magnetized by an external magnetic field. This is an important phenomena normally present only in NP systems.2, 6 Due to their low toxicity, superparamagnetic properties, such as surface area and volume ratio, and simple separation methodology, magnetic iron oxide (Fe 3 O 4 and γ-Fe 2 O 3 ) NPs have attracted much attention and are especially interesting in biomedical applications for protein immobilization, such as diagnostic magnetic resonance imaging (MRI), thermal therapy, and drug delivery.7 Iron's reactivity is important in macroscopic applications (particularly rusting), but is a dominant concern at the nanoscale.8 Finely divided iron is considered pyrophoric. These are the reasons that iron NPs could not capture much attention. The extreme reactivity of iron makes it difficult to study and inconvenient for applications.9 However, potent magnetic and catalytic properties have diverted the attention toward iron's potential.2 Iron oxide NPs can be easily and promptly induced into magnetic resonance by self-heating, applying the external magnetic field, and also by moving along the field of attraction. Synthetic methods, crystallization, size, shape, and quality of the iron oxide NPs greatly affect these behaviors. It is obvious that these approaches toward the synthesis of well-crystallized and size-controlled iron oxide NPs offer more prospects for these applications.10 The shapes of nanomaterials (NMs) also exert tremendous impact on their properties, including catalysis.11 Shape change shows crystal facets, and the atomic arrangements in each facet have reflective effects on its properties. The development of protocols for desired morphology, size, and shape is under consideration.12 Iron oxide NPs have been synthesized using mechanochemical (ie, laser ablation arc discharge, combustion, electrodeposition, and pyrolysis) and chemical (sol–gel synthesis, template-assisted synthesis, reverse micelle, hydrothermal, coprecipitation, etc) methods.13 Various shapes of iron oxides (ie, nanorod, porous spheres, nanohusk, nanocubes, distorted cubes, and self-oriented flowers) can be synthesized using nearly matching synthetic protocols, by simply changing the precursor iron salts. These novel protocols are easy to implement, economical, and control shape, in a sustainable manner.11 As well as the synthesis (to produce more compatibability in biosystems, proper functionalization, and molecular conjugation), surface modification of iron oxide is very important. In order to avoid chemical corrosion induced by instability, surface modification is the key post-synthesis step to produce iron NPs that are both biocompatible and stable. There are some other changes that may be applied as well and can result in additional physical and chemical properties onto iron oxide NPs.13 Currently, there is an increase in interest in ex vivo synthesis of NPs for diverse purposes, such as medical treatments, branches of industry production, and wide incorporation into diverse materials, such as cosmetics or clothing.14 NPs have a high surface-to-volume ratio that increases reactivity and possible biochemical activities.15 However, the interaction mechanism at the molecular level between NPs and biological systems is largely unknown.9 However, a thorough understanding of the role of nanosized engineered materials on plant physiology at the molecular level is still lacking.16 Plants, under certain conditions, are capable of producing natural mineralized NMs necessary for their growth.17 Nano-TiO 2 treatment, at proper concentration, accelerates the germination of aged seeds of spinach and wheat in comparison to bulk TiO 2,18, 19 Similarly, carbon nanotubes improve seed germination and root growth by penetrating thick seed coats and supporting water uptake. The effect of NPs on plants varies from plant to plant and species to species.16 In view of the acclaimed reports on the use of nanotechnology as an emerging discipline in almost all fields of technology, it is important to understand the course of germination in relation to NPs. Recent advances in nanotechnology and its use in the field of agriculture are increasing astonishingly; therefore, it is tempting to understand the role of NPs in the germination and growth of seeds.14 Dispersing of iron NPs upon mercury is considered one of the earliest convenient methods for producing well-defined iron NPs. Some methods have also been successfully used for organic-solvent-based procedures.20 However, later mercury-based methods were replaced with organic-solvent-based methods. This change has been due to the toxic nature of mercury vapors, the low solubility of iron in mercury, and the comparative ease of removing organic solvents.2 In the current era, ultrafine magnetic iron oxide particles are obtained using complex structures or organized assemblies.21 Various saturated and unsaturated fatty acids as primary and secondary surfactants, are also used to prepare stable aqueous magnetic suspensions.9
Is red iron oxide safe for skin?
Iron oxide black, red and yellow should be considered as irritant to skin and eyes.
Is tin oxide safe in skincare?
tin oxide Good No known benefits
Mineral-derived cosmetic ingredient that is most often used to lend opacity to a formula May also function as a bulking agent, increasing the volume of the formula White-to-grayish powder in raw material form Also goes by the name “tin(IV) oxide” in research literature
Tin oxide typically functions as an opacifying agent in cosmetic products and is commonly used in combination with mica and titanium dioxide. It can also function as a bulking agent, increasing the volume of the formula. Tin oxide occurs in nature as the mineral cassiterite.
American Elements, Accessed January 2022, ePublication PubChem, Accessed January 2022, ePublication International Journal of Toxicology, 2014, pages 40S-46S
Peer-reviewed, substantiated scientific research is used to assess ingredients in this dictionary. Regulations regarding constraints, permitted concentration levels and availability vary by country and region. : tin oxide
Is the red iron oxide approved for cosmetic use natural?
Regular price $ 1.50 USD Regular price Sale price $ 1.50 USD Unit price per Sale Out of stock Brown iron oxide is a deep, rich brown powdered pigment. Iron oxides are graded safe for cosmetic use and are produced synthetically in order to avoid the inclusion of impurities normally found in naturally occurring iron oxides including ferrous or ferric oxides, arsenic, lead and other poisonous substances.
- Gorgeous brick red🤩 This is my first time using any colorant other than clays or plant powders in cp soap and I AM HOOKED! Very easy to use, love love love the final colour.” —Arlene (verified) A little goes a long way.
- Please start with small amounts and slowly increase to avoid over pigmentation.
Recommended for:
| Soap CP soap stable | Eyes FDA-permitted for eye area use | Lips FDA-permitted for use on lips | Nails FDA-permitted for external use |
| External FDA-permitted for external use | Resin Beautiful in resin | Crafts Great for arts & crafts | Melts Not suitable |
NOT RECOMMENDED for bath bombs.
| Red Iron Oxide | SDS COA |
|---|---|
| Product Type | Pigment |
| FDA-Permitted for External Use | Yes |
| FDA-Permitted for Eye Area Use | Yes |
| FDA-Permitted for General (Including Lips) Use | Yes |
| Usage Rate CP Soap | 1 tsp per pound of oils |
| Usage Rate MP Soap | ⅛ tsp per pound of MP base |
| Ingredients | Red iron oxide (CI 77491) |
ul> Sample bags contain approximately one teaspoon. Ultramarines and oxides are recommended for use in oil-based applications. Notes for soap use: when mixing with MP soap, blend in a few drops of glycerin or oil to make a smooth paste to avoid clumps in your soap. White MP base will always create a pastel form of the color due to titanium dioxide in base. Non-Bleeding, Non-Migrating. Stable in high pH
View full details A fantastic deep red! I used this to make a masculine “rough” soap for my nephew. The colors came out amazing! Used the red iron oxide, yellow iron oxide along with black iron oxide to make this soap. It came out exactly like my nephew wanted. Rugged, earthy and man sized. Love the color! So glad I found this site! Used the color to make my peppermint cold process soap. I’m a beginner but can’t wait to try other colors. Little goes a long way I use the Red Iron Oxide mixed with several other colors (Pink, Orange, Merlot or Yellow) to give me a perfect red color every time. I use this mixture in CP soap bars and have been delighted with the outcome every time. Love this red! Used this red for the first time to make my Christmas peppermint CP soap. Great! It’s the perfect color for a CP with red.