Pyruvic acid is an alpha-keto acid used in chemical peels and exfoliating formulations to promote desquamation, improve skin texture, and address acne, photoaging, and hyperpigmentation. It also converts to lactic acid on the skin, contributing to moisturizing and keratolytic effects.
| Reported effect | How often | Notes |
|---|---|---|
Stinging or burning sensation | Common | Often felt during application, particularly at higher concentrations or low pH. |
Erythema (redness) | Common | Transient redness typically resolving within hours to days post-peel. |
Pungent vapor irritation to eyes/respiratory tract | Common | Pyruvic acid releases irritating fumes, requiring good ventilation during peel procedures. |
Desquamation and crusting | Uncommon | Peeling and flaking as part of the exfoliation process, more pronounced at higher strengths. |
Post-inflammatory hyperpigmentation | Uncommon | More likely in darker skin phototypes or with inadequate sun protection. |
Vesiculation or blistering | Rare | Associated with excessive concentration, prolonged contact, or improper neutralization. |
Scarring | Very rare | Reported with deep penetration or mishandling of high-strength peels. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.