Researched by Helena DeMaria-Williams
Formula IngredientEmollient / Viscosity Controlling AgentTrihydroxystearin
INCI: Trihydroxystearin
Trihydroxystearin is a triester of glycerol and 12-hydroxystearic acid, derived from hydrogenated castor oil. It acts as an oil-phase gelling agent capable of thickening both oils and silicones without requiring water, giving formulations a smooth, balm-like or butter texture. It functions simultaneously as a skin-conditioning emollient, leaving a soft, non-greasy feel on the skin.
Category
Emollient / Viscosity Controlling Agent
Irritation Risk
Low
Skin Types
all skin types, dry, normal, combination, oily
What does this do in a formula?
viscosity control, oil gelling, skin conditioning, smooth texture, emolliency
Is Trihydroxystearin safe? Key considerations
Can Trihydroxystearin cause irritation?
Low RiskTrihydroxystearin is a well-tolerated emollient with no known significant irritancy. It is not listed under EU CosIng Annex II (prohibited) or Annex III (restricted) substances. No safety alerts have been identified in available cosmetic safety databases.
Does Trihydroxystearin increase sun sensitivity?
No RiskTrihydroxystearin is a structural/emollient ingredient with no photosensitising properties. No sun protection precautions are required based on its presence in a formulation.
Is Trihydroxystearin safe during pregnancy?
SafeTrihydroxystearin is a hydrogenated castor oil-derived ester with no identified reproductive or developmental concerns. It is considered safe for use during pregnancy at typical cosmetic concentrations.
How does Trihydroxystearin work?
Trihydroxystearin is a triester of glycerol and 12-hydroxystearic acid, derived from hydrogenated castor oil. It acts as an oil-phase gelling agent capable of thickening both oils and silicones without requiring water, giving formulations a smooth, balm-like or butter texture. It functions simultaneously as a skin-conditioning emollient, leaving a soft, non-greasy feel on the skin.
Which products contain Trihydroxystearin?
Shop products that contain Trihydroxystearin
