Ingredient

Hexanediol

On labels: 1,2-Hexanediol

Hydrating solvent common in K-beauty that supports preservation.

What it does

Hydrates

Evidence

Evidence: Moderate · Some good studies; results vary from person to person.

Often chosen for

Dry, tight-feeling skin

Skin types

Dry, Oily, Combination, Normal

Typical amount

1-3% in a formula

Best time

Morning or evening