Glyceryl Stearate (GMS)

Glyceryl Stearate is a versatile lipid-based ingredient used in cosmetic formulations as a co-emulsifier, emulsion stabilizer, structuring agent, and skin-conditioning ingredient. Derived from glycerin and stearic acid, it helps improve the texture, consistency, and stability of creams, lotions, and emulsified systems.

In formulations, Glyceryl Stearate contributes to a smoother, more elegant skin feel while helping the oil and water phases remain homogeneous. It is especially useful in formulations where a creamier body, improved slip, and enhanced emulsion structure are desired.

Cosmetic Benefits

• Supports emulsion stability as a co-emulsifier
• Increases viscosity and creaminess
• Works well alongside fatty alcohols for enhancing skin feel
• Adds creaminess and cushion while improving spreadability
• Helps improve the after-feel of creams and lotions by adding light emolliency without excessive greasiness

Applications

• Creams and lotions
• Facial moisturizers
• Body creams
• Cleansers and cream washes
• Hair conditioners
• Emulsified balms and treatments

Formulation Notes

• Use: 1 – 5% as a co-emulsifier or structuring agent
• Higher levels may increase richness and opacity
• Often paired with:
  • Cetyl Alcohol
  • Cetearyl Alcohol
  • Stearic Acid
  • Nonionic emulsifier systems

From the Chemist

Jennifer says…

Glyceryl Stearate is one of those foundational ingredients that makes an emulsion feel more complete. It gives structure, creaminess, and better skin feel without taking over the formula. I especially like it when paired with fatty alcohols such as cetyl and/or cetearyl alcohol for a more elegant, professional finish.