Glycolic acid's small molecular size lets it unglue dead surface cells efficiently, smoothing texture and restoring light-reflective glow. It is the classic chemical-exfoliation molecule.
Decades of use establish its efficacy for texture and tone at 5–10% home-use levels.
How to use: One to three evenings weekly, gradually. Morning SPF is non-negotiable.
Cautions: Stings on compromised barriers — pause when your Beauty State shows sensitivity ≥3.