Papain

Papain is a proteolytic enzyme obtained from papaya latex, used in cosmetics as a pH-dependent keratolytic ingredient. Exfoliating formulas use it to dissolve surface proteins, refine skin texture, and promote a smoother, more even look.
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Ingredient Snapshot

Overview
A papaya enzyme that gently dissolves dull surface skin cells.
Category
Exfoliating, Tone/Texture, Brightening
Type
Exfoliant

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Helps lift dull surface buildup for a fresher, brighter-looking complexion with smoother feel. Evidence for long-term tone improvement is limited, so results can vary by formula and skin type.

Uses In Skincare & Cosmetics

Often included in enzyme cleansers, exfoliating masks, and gentle peel gels for glow-boosting routines.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

May cause irritation or allergic reactions, particularly in individuals with papaya or latex sensitivities; patch testing is prudent. Avoid use on compromised skin and around the eyes, as enzymes can increase sting potential.

Is Papain a Good Ingredient?

Rated Fair: it provides gentle enzymatic exfoliation, but its activity is highly pH- and formulation-dependent, and clinical evidence against standard acids is limited. There's also a meaningful risk of irritation or sensitization, especially for those sensitive to papaya or latex proteins, which keeps it out of Good territory.