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Lactic Acid

LACTIC ACID

CAS: 50-21-5

Risk: 1/5

Lactic acid is a gentle alpha-hydroxy acid (AHA) derived from milk fermentation. It exfoliates dead skin cells while simultaneously hydrating and improving skin texture. Known for its low irritation profile, making it suitable for sensitive skin types.

Functions

HumectantExfoliantpH Adjuster

Benefits

  • Gentle exfoliation
  • Hydration boost
  • Improved radiance
  • Smoother texture

Suitable Skin Types

Warnings

At concentrations above 10%, may cause redness or irritation. Sunscreen use recommended during daytime.

Frequently Asked Questions

Is lactic acid safe for skin?

Yes, lactic acid carries minimal risk and is suitable for all skin types. At low concentrations, irritation risk is very low, making it ideal for sensitive skin.

What does lactic acid do in skincare?

It gently exfoliates dead skin cells, improves hydration, and enhances skin radiance. As a humectant, it also draws moisture into the skin.

Is lactic acid good for sensitive skin?

Yes, it's the gentlest AHA available. Sensitive skin types can safely use it at low concentrations (5% or less) with minimal irritation risk.

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