Ingredient

2,3-butanediol

Low risk

FunctionHumectant

What it is — 2,3-Butanediol (INCI: 2,3-Butanediol) is a small diol used as a humectant and solvent, with some mild antimicrobial character.

What it does — It is commonly used to bind water and help keep formulas and skin feeling hydrated, and it can lend light support to a formula's freshness.

Typical use — It appears across toners, essences, serums, lotions and creams as a supporting hydrator and solvent.

Who it suits / good to know — Suitable for most skin and scalp types. Like other humectants, it performs best sealed in with a moisturizer, especially in dry air.

Safety — DHALIORA grades it low risk: a well-tolerated humectant. This reflects the ingredient in general and is not medical advice; patch-test if your skin is easily irritated.

Why we grade it Low: Low risk - humectant/amino conditioning agent, well tolerated.
How grades are set — Risk reflects our own reading of publicly available safety data, an EWG-style reading shown at the worst-case grade we've assigned this ingredient across products. It isn't a third party's proprietary score, and it isn't medical advice. Always read the packaging and patch-test where indicated.
← Back to the ingredient glossary