Ingredient
Polyglycerin-3
Triglycerin
Polyglycerol-3
Glycerin oligomer
What it is
A polymer of three glycerin units, used as a humectant that provides longer-lasting hydration than plain glycerin.
How it works
Its larger molecular size than glycerin means it stays on the skin surface longer, drawing in moisture and keeping the stratum corneum hydrated without a sticky feel.
What it does
Humectant
Skin conditioning
Concerns to know
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Barrier & hydration support
A well-studied humectant or emollient that helps hydrate the skin and support its moisture barrier.