Diglycerin ●
TL;DR. This ingredient is primarily used as a humectant, helping water-based formulas hold moisture and reduce dry-feeling after use. It can also improve slip and soften the tacky feel of other water-binding materials.
What does Diglycerin do in a cosmetic formula?
This ingredient is primarily used as a humectant, helping water-based formulas hold moisture and reduce dry-feeling after use. It can also improve slip and soften the tacky feel of other water-binding materials.
Is Diglycerin clean?
From a clean-beauty perspective, it is generally well tolerated, low in sensitization concern, and not a common restricted-list issue. The main review point is feedstock and processing documentation rather than skin compatibility.
Is Diglycerin sustainable?
This material is commonly made from renewable vegetable-oil or sugar-related feedstocks, though petroleum-derived routes can exist. It is expected to be readily biodegradable and has low environmental persistence concerns in rinse-off and leave-on use.
Is Diglycerin COSMOS-approved?
It is generally compatible with COSMOS-natural formulas when sourced and processed under approved criteria, with supplier documentation needed for COSMOS-organic claims. Its Green Chemistry profile is favorable when made from renewable feedstock through simple conversion chemistry and used as a biodegradable water-binding molecule.
How does Diglycerin work chemically?
The molecule is a small six-carbon polyol with five hydroxyl groups, which explains its strong water affinity and compatibility with aqueous systems. Typical use is often around 1 to 10 percent, with good stability across normal cosmetic pH ranges and possible tack or viscosity contribution at higher levels.
Last updated 2026-05-13