AHA Exfoliant ·

Moderate evidence

Lactobionic Acid

What is it?

A polyhydroxy acid (PHA) derived from lactose, valued in skincare for a gentler exfoliation and moisturizing profile than classic AHAs.

What does it do?

Commonly used as a gentle exfoliant and antioxidant, suited to sensitive skin. According to PubMed, a literature review of lactic and lactobionic acids found both compounds bind substantial water and act as antioxidants through matrix-metalloproteinase inhibition and metal-chelating properties, while maintaining epidermal barrier integrity -- making lactobionic acid usable even on sensitive, couperose-prone skin.

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Sources

Important disclaimer

This page provides general skincare information and is not medical advice, diagnosis or treatment. Ingredient interactions and evidence summaries reflect published, cited sources — not a personal assessment of your skin. For medical skin conditions, rashes, pregnancy/lactation questions or persistent concerns, please consult a licensed dermatologist or HPCSA-registered practitioner.