What Is Glycerin in Skincare? The Quiet Workhorse
A humectant that has been in skincare for over a century. It draws water to the surface and holds it, and it is in almost every serum and cream.
On the label
Glycerin or glycerol, often second or third on the list. High placement is a good sign in a hydrating product.
What it does not mean
It does not mean cheap in the pejorative sense. Some of the most honest serums are mostly glycerin and water.