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Lactic Acid

ExfoliantHumectantNatural

Also known as: AHA, Alpha Hydroxy Acid

A gentle alpha hydroxy acid derived from milk. Larger molecular size than glycolic acid means slower, more gentle penetration. Also has humectant properties.

Benefits

Gentle exfoliation, hydrates while exfoliating, improves skin texture, brightens skin, suitable for sensitive skin types.

How to Use

Start with 5-10% concentration 2-3 times per week. Increase gradually. Apply to clean skin in evening. Follow with moisturizer.

Technical Details
pH Range3.5-4.0
Typical Concentrations5%-15%
Research Summary

Well-tolerated exfoliant with additional moisturizing properties. Studies show improvement in photoaging signs with less irritation than glycolic acid.

What to Avoid With
  • active skin infections
  • open wounds

Cautions

Milder than glycolic acid but still increases sun sensitivity. Patch test first if sensitive skin.

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Lactic Acid — Skincare Ingredient | Skinularity