Rate My SPF

Diglycerin

What Diglycerin is & what it does

Diglycerin is a humectant made by joining two glycerin molecules, closely related to ordinary glycerin. In skincare and sunscreen formulas it is commonly used to attract and hold water, helping keep the product and the skin's surface hydrated. It is generally considered mild and is often chosen as a gentler-feeling alternative to glycerin.

What does Diglycerin do in skincare?

Diglycerin is a humectant, an ingredient that attracts and holds water. In skincare and sunscreens it helps keep both the product and the skin's surface hydrated, and it is closely related to ordinary glycerin. It is often chosen as a gentler-feeling alternative to glycerin.

Is Diglycerin safe?

Diglycerin is a glycerin-related humectant that is widely used in cosmetics and is generally considered safe and well tolerated. It is regarded as a mild ingredient suitable for many skin types. As always, patch testing a new product is reasonable if your skin is very reactive.

Is Diglycerin natural or synthetic?

Diglycerin is made by joining two glycerin molecules, and glycerin itself can be plant-derived or synthetic. The finished ingredient is best described as derived but processed. Its exact origin depends on the source glycerin used by the manufacturer.

Sunscreens with Diglycerin

We rate 89 sunscreens that contain it, showing the top 10 by overall score:

← All ingredients