AHA
The smallest alpha-hydroxy acid, derived from sugarcane; a chemical exfoliant.
Loosens the bond between dead surface cells, improving texture and brightness; may reduce the look of uneven tone.
Toners, peels, cleansers, masks; typically 4–10% leave-on, higher in professional peels.
Tolerant, non-sensitive skin with texture or dullness; not for compromised barriers.
Can irritate and increase sun sensitivity. Avoid on skin using tretinoin unless guided. Skip before/after strong treatments.
More is not better — daily high-strength use can damage the barrier. Tingling does not mean it's working.
Avoid simultaneous use with retinoids or other acids in the same session unless professionally directed.
Explain it as a gentle resurfacing step, not a daily 'scrub substitute,' and stress SPF with any acid use.