Healthy Skinfluence

2,3-Butanediol

2,3-Butanediol

2,3
9/10
Concern level
High concern

2,3-Butanediol is a small diol used in cosmetics primarily as a humectant, solvent, skin-conditioning agent, and masking agent. It helps retain moisture, improve formula feel, and support spreadability and ingredient delivery in leave-on and rinse-off products. It is generally considered a mild, low-risk cosmetic ingredient.

Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data

Benefits

Moisturizing

Chemical Properties

Molecular Weight
90.12 g/mol
pH Range
3.00 - 8.00
Typical Concentration
1.00% - 10.00%
CAS Number: 513-85-9

Skin Type Compatibility

dry skin9/10
oily skin8/10
sensitive skin8/10
acne prone8/10
mature skin8/10
normal skin9/10

Interactions

incompatible with: No major cosmetic ingredient incompatibilities are well established, May increase sting potential when combined with strong acids or other high-irritation actives in sensitive-skin formulas

Risks & Warnings

Low overall hazard in cosmetic use, but like most glycols/diols it can occasionally cause mild irritation or stinging in very sensitive or compromised skin, especially in higher concentrations or low-pH formulas. SDS data indicate standard industrial precautions for eye/skin contact during handling of the raw material.

Vegan Cruelty-Free

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