Methylpropanediol
Methylpropanediol
Also known as: MPD · 2-Methyl-1,3-Propanediol
HumectantSolventPenetration enhancer
“A highly effective solvent that enhances the delivery of salicylic acid and other actives.”
What it does
Methylpropanediol is a diol solvent and humectant that significantly enhances the skin penetration of co-formulated actives, particularly salicylic acid. This is why it is used as the primary solvent in Paula's Choice BHA exfoliants — it makes the salicylic acid far more effective. It also hydrates the skin and has a clean, non-sticky texture.
Benefits
- Significantly boosts penetration of co-formulated actives
- Lightweight hydration
- Clean, non-sticky texture
- Particularly effective as a carrier for BHA
How to layer
☀️ Morning routine
Cleanser
Toner
Serum
Moisturiser
SPF
🌙 Evening routine
Cleanser
Toner
Serum
Moisturiser
Face Oil
After cleansing, on damp skin, before serums
Good for
All skinOily skinCombination skinNormal skin
Works well with
Heads up
- ⚠At high concentrations may cause tingling on sensitive skin
How to use
A supporting solvent ingredient. No special application needed.
Typical concentration: 5–30% in exfoliant formulations