Glycerin is one of the most common skincare ingredients of all, quietly doing hydration work in countless products. Here is what it does and why it is everywhere.
What is glycerin and what does it do?
Glycerin is a humectant, meaning it attracts and holds water to help skin feel hydrated and soft. It is gentle, well tolerated, and effective, which is why it appears in toners, serums, and moisturizers across almost every skin type.
Is glycerin good for your skin?
Glycerin suits most skin types, including sensitive and oily skin, because it is lightweight and comfortable. It works best layered under a moisturizer so the water it draws in is sealed and does not simply evaporate, especially in dry air.
How does glycerin compare to hyaluronic acid?
Both are humectants that help skin hold water, and they often appear together. Our hyaluronic acid guide explains the pairing, and a hydrating step like the Supple Preparation Unscented Toner is an easy way to use humectants in a routine.
FAQ
What does glycerin do for skin?
Glycerin is a humectant that attracts and holds water, helping skin feel hydrated and soft. It is gentle and used across most product types.
Is glycerin good for oily skin?
Yes. It is lightweight and well tolerated, so it suits oily and sensitive skin as well as dry skin.
Is glycerin the same as hyaluronic acid?
Both are humectants that hold water, but they are different ingredients. They often work together in the same formula.
Should you seal glycerin with a moisturizer?
Yes, especially in dry air. Sealing humectants with a moisturizer helps hold the water in rather than letting it evaporate.
The quiet hydrator
Glycerin is a gentle, reliable humectant that helps skin stay hydrated. Layer it under a moisturizer and it does its job beautifully.
