What it does
- Hydrates with a very light, non-greasy feel.
- Dissolves and carries actives, especially botanical extracts.
- Improves spreadability and sensory feel.
How it works
Butylene glycol is widely documented as a humectant and excellent solvent; many botanical extracts are supplied in a butylene-glycol base. It gives a lighter feel than glycerin and improves the texture of a formula.
Use level
- Typical use level
- typically 2–10%
Commonly used at 2–10%. Frequently present as the carrier of botanical extracts.
Formulation considerations
- Water-miscible; add to the water phase.
- A workhorse solvent for extracts and preservatives.
- Light, quick-absorbing feel.
What it pairs with & what to avoid
Pairs well with
- Glycerin and other humectants
- Botanical extracts
Use with care / avoid
- No notable incompatibilities
Regulatory status
Butylene glycol is listed in the EU CosIng database and is a long-established cosmetic ingredient.
Common questions
What does butylene glycol do?
It hydrates with a light feel and dissolves/carries actives such as botanical extracts.
Is butylene glycol safe?
It is a long-established, well-tolerated cosmetic ingredient at typical levels.
What percentage of butylene glycol is used?
Commonly 2–10%.