Glycerin

Glycerin attracts and holds water in the stratum corneum, improving hydration and smoothness, and it helps the outer skin layer function and repair after irritation. It also keeps lipids in the skin barrier more fluid in dry conditions. Because it is so effective and well tolerated, it is a backbone ingredient in moisturizers for dry and sensitive skin.

In our directory: It’s a key ingredient in 33 products we review, most often moisturizers and sunscreen. Those products are mostly built for hydrating, dryness relief and long-lasting moisture. In formulas, it most often shares the label with hyaluronic acid, niacinamide and squalane.

Use in a moisturizer or serum once or twice daily, ideally on slightly damp skin.

References

1. 1Glycerol and the skin: holistic approach to its origin and functions — British Journal of Dermatology (2008), via PubMed
2. 2Emollients and Moisturizers — DermNet

Educational, not medical advice. Ingredient guides summarise published research and expert guidance; formulas and concentrations differ between products.