Glyceryl hydroxystearate, also known as glyceryl monohydroxystearate (GMHS), is an organic chemical compound with the molecular formula C₂₁H₄₂O₅. It is a whitish- or pale yellow-colored powder found in a variety of cosmetics and skin-care products.

Quick Facts Names, Identifiers ...

Glyceryl hydroxystearate

Names
IUPAC name 1,3-Dihydroxypropan-2-yl 2-hydroxyoctadecanoate
Other names Glyceryl monohydroxystearate; Hydroxyoctadecanoic acid, monoester with glycerol; Stearic acid, hydroxy-, monoester with glycerol Hydroxystearic acid, monoester with glycerol; Octadecanoic acid, hydroxy-, monoester with 1,2,3-propanetriol
Identifiers
CAS Number	1323-42-8 Y
3D model (JSmol)	Interactive image
ChemSpider	92678
ECHA InfoCard	100.013.960
EC Number	215-355-9
PubChem CID	102606
UNII	UJ6CAW9YNV Y
CompTox Dashboard (EPA)	DTXSID9051666
InChI InChI=1S/C21H42O5/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-20(24)21(25)26-19(17-22)18-23/h19-20,22-24H,2-18H2,1H3 Key: YIDBZTKQBSDQDX-UHFFFAOYSA-N
SMILES O=C(OC(CO)CO)C(O)CCCCCCCCCCCCCCCC
Properties
Chemical formula	C21H42O5
Molar mass	374.562 g·mol−1
Appearance	White/pale yellow powder
Density	1.007 g/mL[1]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

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Glyceryl hydroxystearate is an ingredient found in some personal-care products. It is commonly used as an emollient, emulsifying agent, or bodying agent. It is often found in facial-care, foot-care, and lip-care products, sunblock, self-tanners, moisturizers, shampoos, creams, lotions, soaps, concealers, and roll-ons and sun-exposure treatments.^[2]