Magnesium Stearate
Magnesium Stearate is a cosmetic ingredient used as an anticaking, bulking agent. It appears in about 1% of cosmetic products in our 90,000+ product dataset. It is regulated in the EU (listed in a Cosmetics Regulation annex). PubMed carries 420 studies of its skin or topical use.
| INCI name | MAGNESIUM STEARATE |
| Function | ANTICAKING, BULKING, COLORANT, MOISTURISING |
| CAS number | 557-04-0 |
| EC number | 209-150-3 |
| Prevalence | 868 products (0.94% of dataset) |
| Most used in | Makeup |
| EU status | Restricted (annex ) |
| Scientific studies | 420 on PubMed (skin/cosmetic/topical) |
| Monthly searches | 22,200 |
Used in
Eyeshadows 25.2%Setting Spray & Powders 15.1%Blushes 12.7%Foundations 8.3%Highlighters 6.7%Bronzers 5.4%
Frequently asked
- What does Magnesium Stearate do in skincare?
- Magnesium Stearate functions as an anticaking, bulking agent in cosmetic formulas.
- Is Magnesium Stearate allowed in cosmetics?
- Yes, but it is regulated in the EU — it appears in a Cosmetics Regulation annex with usage conditions.
- What products contain Magnesium Stearate?
- It is most commonly found in Makeup products, especially eyeshadows (25.2% of its uses).
Manufacturers with experience using Magnesium Stearate
Match with vetted US contract manufacturers that have hands-on experience formulating with this ingredient.