Butylene Glycol
Humectant CG-friendly
A light humectant and solvent, often the carrier for plant extracts. Not a drying alcohol.
How our checker rates it
| Mode | Rating | Why |
|---|---|---|
| Curly Girl | OK | No concerns for this mode. |
| Relaxed hair | OK | No concerns for this mode. |
| Low porosity | Good | Humectant — draws water in. Low-porosity hair usually does well with humectant-rich products. |
| Protein-sensitive | OK | No concerns for this mode. |
Ratings assume it is listed near the top of the label. After the first preservative or fragrance (likely 1% or less) most cautions soften.
What humectant ingredients do
Ingredients that attract and hold water. How well they work depends on air moisture (dew point) and your porosity.
Also listed as
- 1,3-butanediol
- 1,3-butylene glycol
Similar ingredients
Sources
Last data update:
- Cosmetic Ingredient Review (CIR). Ingredient safety assessments. Safety assessments for cosmetic ingredients cited on ingredient pages.
How we research and update pages: editorial policy. Spotted an error? Tell us.