What does glycerin do in skincare?

Glycerin is a humectant that draws water into the skin's outer layers, supporting hydration and plumpness. It's one of the most well-researched and widely used ingredients in skincare.

Glycerin can be derived from plant or animal sources (vegetable glycerin is plant-based), or synthesized in the lab. All forms function identically in skincare formulations.

Is glycerin good for all skin types?

Glycerin is generally well-tolerated across skin types at typical use levels, as it hydrates without being occlusive or comedogenic. Very high concentrations may feel sticky, but standard skincare levels are low enough to avoid this.

humectant

Glycerin

Generally safe·Strong evidence

A humectant that draws water into the skin. One of the best-studied, best-tolerated ingredients in personal care.

Questions

What does glycerin do in skincare?: Glycerin is a humectant that draws water into the skin's outer layers, supporting hydration and plumpness. It's one of the most well-researched and widely used ingredients in skincare.
Is glycerin natural?: Glycerin can be derived from plant or animal sources (vegetable glycerin is plant-based), or synthesized in the lab. All forms function identically in skincare formulations.
Is glycerin good for all skin types?: Glycerin is generally well-tolerated across skin types at typical use levels, as it hydrates without being occlusive or comedogenic. Very high concentrations may feel sticky, but standard skincare levels are low enough to avoid this.

Products with Glycerin

In our guides

References

Cosmetic Ingredient Review ↗

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.