Article: Lactic Acid
Lactic Acid
Category: Alpha Hydroxy Acid (AHA), pH adjuster, Exfoliant
Brief description: Derived from milk, though it can also be synthesized, it is a gentle exfoliant that is suitable for sensitive skin. A natural acid produced by fermentation, used for its exfoliating properties and to adjust the pH of cosmetics.
Benefits: It promotes exfoliation and hydration, improving skin texture and reducing the appearance of fine lines and wrinkles.
Skin type suitability/concerns: Suitable for all skin types, particularly dry and sensitive skin.
Target audience: Individuals seeking mild exfoliation, skin brightening, and hydration.
Chemical composition: A hydroxycarboxylic acid with a hydroxyl group adjacent to the carboxyl group.
Physical aspect: It's a colorless, odorless syrupy liquid.
Compatibility: Compatible with many cosmetic ingredients, but pH adjustments may be necessary.
Concentration: Typically used at 1-10% in over-the-counter products, up to 20-88% in professional peels.
Side effects/adverse reactions: Can cause irritation, but less likely than other AHAs. Sun sensitivity can occur, so sunscreen use is necessary.
Regulatory status: Approved for use in cosmetics in many countries, but concentrations in products are often regulated.
Sustainability/ethical considerations: While traditionally derived from milk, most lactic acid in cosmetics is now made via bacterial fermentation, a sustainable process.
Brief description: Derived from milk, though it can also be synthesized, it is a gentle exfoliant that is suitable for sensitive skin. A natural acid produced by fermentation, used for its exfoliating properties and to adjust the pH of cosmetics.
Benefits: It promotes exfoliation and hydration, improving skin texture and reducing the appearance of fine lines and wrinkles.
Skin type suitability/concerns: Suitable for all skin types, particularly dry and sensitive skin.
Target audience: Individuals seeking mild exfoliation, skin brightening, and hydration.
Chemical composition: A hydroxycarboxylic acid with a hydroxyl group adjacent to the carboxyl group.
Physical aspect: It's a colorless, odorless syrupy liquid.
Compatibility: Compatible with many cosmetic ingredients, but pH adjustments may be necessary.
Concentration: Typically used at 1-10% in over-the-counter products, up to 20-88% in professional peels.
Side effects/adverse reactions: Can cause irritation, but less likely than other AHAs. Sun sensitivity can occur, so sunscreen use is necessary.
Regulatory status: Approved for use in cosmetics in many countries, but concentrations in products are often regulated.
Sustainability/ethical considerations: While traditionally derived from milk, most lactic acid in cosmetics is now made via bacterial fermentation, a sustainable process.
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