Ingredient review
Aluminum Hydroxide
INCI: CI 77002
A safe, mineral-based colorant that adds opacity and a matte finish to makeup, with a strong safety record.
In plain English
CI 77002 is a mineral pigment, also known as aluminum hydroxide, that gives makeup products a white or off-white color and helps them feel smooth and opaque. It's not an active skincare ingredient but a cosmetic colorant used to adjust shade and texture.
Quick decision guide
Useful, but context matters
Aluminum Hydroxide is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Aluminum Hydroxide.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
moderateThere is useful support, but formula details and claim strength still matter.
What it is
A naturally occurring mineral compound (aluminum hydroxide) that is ground into a fine powder and used as a pigment in cosmetics. It is approved by the FDA and other global regulators for use in color cosmetics.
How it works
It sits on the surface of the skin or hair, scattering light to create a white or opaque appearance. It also helps other pigments blend evenly and can improve the feel of powders and creams by adding a silky texture.
Pros
Safe and well-studied
CI 77002 has a long history of safe use in cosmetics and is approved by major regulatory bodies like the FDA and EU CosIng.
Improves makeup texture
It helps create a smooth, even application in powders and creams, reducing chalkiness and improving blendability.
Cons and cautions
No skincare benefit
This ingredient is purely a colorant and does not hydrate, protect, or treat the skin in any way.
Can be drying in high amounts
In loose or pressed powders, high concentrations may absorb moisture from the skin, leading to a dry or cakey look.
Best for
- Anyone using color cosmetics like foundation or eyeshadow
- People with oily skin who prefer a matte finish
Use caution if
- Those with extremely dry or flaky skin, as powders with high levels may emphasize texture
Usage tips
Safety summary
CI 77002 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been raised by regulatory agencies.
Research notes
Research on CI 77002 focuses on its use as a colorant and opacifier. Studies confirm low skin irritation and sensitization potential. It is not absorbed through intact skin in significant amounts, supporting its safety profile.
Common label clues
- Typical concentration
- Usually less than 10% in color cosmetics
- Regulatory status
- Approved as a colorant in cosmetics by the FDA (21 CFR 73.1010) and listed in the EU CosIng database. Generally recognized as safe for topical use.
- Common uses
- Foundations, Powders, Lipsticks, Eye shadows
- Environmental note
- Mined from natural mineral deposits, but processing can involve energy-intensive grinding. Not known to bioaccumulate or harm aquatic life at typical cosmetic concentrations.
Good to know
- CI 77002 is often listed alongside other CI numbers in ingredient lists—it's just a color identifier.
- It is not the same as aluminum compounds used in antiperspirants; it's a different chemical form.
Common questions
What is Aluminum Hydroxide in beauty products?
CI 77002 is a mineral pigment, also known as aluminum hydroxide, that gives makeup products a white or off-white color and helps them feel smooth and opaque. It's not an active skincare ingredient but a cosmetic colorant used to adjust shade and texture.
What does Aluminum Hydroxide do in a beauty product?
It sits on the surface of the skin or hair, scattering light to create a white or opaque appearance. It also helps other pigments blend evenly and can improve the feel of powders and creams by adding a silky texture.
Is Aluminum Hydroxide safe for most people?
CI 77002 is considered safe for use in cosmetics at typical concentrations. It has low irritation and comedogenic potential, making it suitable for most skin types. No significant safety concerns have been raised by regulatory agencies.
Who should be careful with Aluminum Hydroxide?
Those with extremely dry or flaky skin, as powders with high levels may emphasize texture
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.