Snapshot
- Overview
- Keeps a formula's pH balanced so it stays gentle and consistent.
- Category
- Sensitive Skin
- Type
- Buffer
3-Aminopropane Sulfonic Acid
3-Aminopropane Sulfonic Acid is a water-soluble buffering agent that sets and holds a product's pH. Keeping formulas within a skin-friendly range helps actives stay stable and textures feel consistent batch to batch.
Like this ingredient?
Our take
Is 3-Aminopropane Sulfonic Acid a Good Ingredient?
Rated Good for reliable pH control and broad compatibility in water-based products. It supports other ingredients but is not a direct treatment on its own.
What it does
Skin Benefits
Promotes product consistency so textures apply evenly and feel balanced on skin. Helps keep sensitive-skin formulas gentle by reducing pH swings.
Where you'll find it
Uses in Skincare & Cosmetics
Common in toners, serums, and moisturizers that require precise pH control. Also used in acid exfoliants to moderate strength for a smoother application experience.
Before you use it
Safety
Low irritation is expected when used appropriately for pH adjustment. End products that are too acidic or alkaline may sting, so well-balanced formulas are important. Patch test if your skin is reactive.
