What it is
Polyglycerin-3 is formed by linking three glycerin units, giving a viscous, water-soluble liquid. It functions primarily as a humectant, attracting and holding water to help keep the skin hydrated, and as a conditioning agent that improves product feel. It is often used as a milder, less tacky alternative or complement to glycerin and serves as a building block for many polyglyceryl ester emulsifiers.
Safety & warnings
Generally well tolerated and considered low-irritation in cosmetic use, similar to glycerin.
Origin & sourcing
Synthetic; produced by polymerizing glycerin, which itself can be sourced from plant oils or other feedstocks.
Questions everyone asks
How is polyglycerin-3 different from glycerin?
It is made of three linked glycerin units, giving a humectant that is often less sticky than glycerin while still drawing moisture to the skin.
What is its main role?
It works mainly as a humectant and skin-conditioning agent that supports hydration and improves product texture.