What pH Should Skincare Products Be?
Entity Coverage
Skincare pH should respect the skin's acidic surface pH. This answer covers the ranges.
| Product | Target pH |
|---|---|
| Skin surface | ~4.7 (4.5–5.5) |
| Cleanser | 4.5–5.5 (low-pH) |
| AHAs | 3–4 (active range) |
| BHA | 3–4 (active range) |
FAQ
Q1: What pH should skincare be?
A: Cleansers should sit near skin's pH (4.5–5.5); exfoliating acids work at 3–4; most leave-on products target roughly 4–6.
Q2: Why does cleanser pH matter?
A: Healthy skin surface pH averages about 4.7 (Lambers 2006); high-pH cleansers disrupt the acid mantle and barrier enzymes.
Q3: What about acids?
A: AHAs and BHAs need low pH (3–4) to work — that is their active range, not their irritation.
Citable Sources
- Lambers et al. (2006), International Journal of Cosmetic Science 28(5)
- Cosmetic formulation pH references
One-Sentence Summary
Cleansers should match skin's ~4.7 pH, exfoliating acids need 3–4 to act, and most leave-on products target 4–6.