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Ingredient dictionary

Glycerin

Also listed as: Glicerina, Glycerol, Glycerine

Glycerin is a clear, slightly sweet liquid that draws water into skin, acting as a humectant that keeps moisture in. Checked against our library November 6, 2026.

What Glycerin does

  • Draws water into the outer skin layer
  • Helps skin feel smooth and soft
  • Makes cleansers feel gentler
  • Keeps skin from feeling tight after washing

Glycerin can be made from plant oils and fats, or produced synthetically. Historically it was a by-product of soap making, and today most supply comes from processes that split fats into their parts. Either way, cosmetic-grade glycerin is purified before it goes into a formula.

Formulators use it because it is widely available, stable and easy to blend. It feels slightly slick on the skin but does not leave a heavy film when used in small amounts. In cleansers, it helps the formula feel comfortable and can reduce the tight feeling some washes leave behind.

Good for

Suits most skin types, including dry and sensitive skin, and works well in cleansers and everyday moisturizers.

Frequently asked questions

Is glycerin good for dry skin?

Yes. Glycerin is a humectant, so it helps skin hold on to water. It is often paired with richer ingredients that seal moisture in, which helps dry skin feel softer and more comfortable over time.

Is glycerin the same as glycerol?

Yes, they are the same thing. Glycerol is the chemical name, and glycerin is the common name used on cosmetic labels. Some labels also use the Spanish or Portuguese form, Glicerina, which refers to the same ingredient.