

FAQ (Frequently Asked Questions)
1. What is Glycerol Monostearate?
Glycerol Monostearate (GMS) is a fatty acid ester derived from glycerin and stearic acid. It is a white, odorless, and sweet-tasting powder commonly used as an emulsifier, thickening agent, and stabilizer in various personal care products.
2. What is the CAS Number and INCI Name of Glycerol Monostearate?
CAS Number: 31566-31-1 / 123-94-4 (depending on purity and grade)
INCI Name: Glyceryl Stearate
3. What are the primary uses of Glycerol Monostearate in personal care products?
Glycerol Monostearate is widely used as:
An emulsifier in lotions and creams to create a smooth, stable blend of water and oils.
A thickener to improve product texture and feel.
A skin-conditioning agent that leaves the skin feeling soft and smooth.
A stabilizer to extend the shelf life of emulsified products.
4. In which types of personal care products is Glycerol Monostearate commonly found?
It is commonly used in:
Moisturizing creams and lotions
Sunscreens
Hair conditioners
Body butters
Makeup foundations
5. Is Glycerol Monostearate safe for use on the skin?
Yes, Glycerol Monostearate is generally recognized as safe (GRAS) for cosmetic use. It is well-tolerated by most skin types, including sensitive skin. However, as with any ingredient, patch testing is recommended for individuals with particularly reactive skin.
6. Is Glycerol Monostearate natural or synthetic?
Glycerol Monostearate can be derived from both natural vegetable oils (such as soy or palm) or produced synthetically. Many suppliers now offer vegetable-based, non-GMO, and sustainably sourced versions suitable for natural and organic formulations.
7. Does Glycerol Monostearate have any moisturizing benefits?
Yes, Glycerol Monostearate helps form a protective barrier on the skin, reducing moisture loss and helping the skin retain hydration, leading to improved softness and suppleness.
8. Is Glycerol Monostearate suitable for vegan formulations?
When sourced from plant-based materials, Glycerol Monostearate is suitable for vegan and cruelty-free formulations. Always verify the source with your supplier.
9. What are the recommended usage levels of Glycerol Monostearate in formulations?
Typical usage rates in personal care formulations range from 1% to 5%, depending on the desired effect (e.g., light emulsification versus thickening).
10. How should Glycerol Monostearate be stored?
It should be stored in a tightly sealed container in a cool, dry place away from direct sunlight and moisture to maintain its stability and performance.