Trehalose
molecular structure · PubChem
AKA: 99-20-7, D-(+)-Trehalose, Mycose, Alpha, Alpha-trehalose, Ergot sugar, Alpha-D-Trehalose, Cabaletta, Mushroom sugar, Natural trehalose
Synthetic
Humectant
Skin Conditioner
Synthetic
Clean
Trehalose has been reported in Microchloropsis, Myrothamnus flabellifolia, and other organisms with data available.
Formula
C12H22O11
Mol. Weight
342.30
CAS #
99-20-7
Form
Powder
State
Dry Powder
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Draws water to skin
Traditional Use
This CAS number corresponds to glycerol (glycerin). One of the oldest known humectants, used in skincare and medicine for thousands of years as a moisturizer and skin protectant.
Skin Types
●all-skin-types
Best For
General
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR