Allium Cepa (Onion) Bulb Extract

Allium cepa (onion) bulb extract is a botanical containing flavonoids, phenolics, and sulfur compounds. It contributes antioxidant content and supports cosmetic claims about improving the look of uneven tone or marks, though the topical evidence is mixed.
Like this ingredient?

Ingredient Snapshot

Overview
Onion extract with antioxidants that may help even out skin tone.
Category
Antioxidant, Tone/Texture
Type
Botanical Extract

Ingredient Ratings

Overall Rating

Fair

Comedogenic Risk

None

Skin Benefits

Provides antioxidant support and may help the look of uneven areas; however, evidence in leave-on cosmetics remains limited. Best viewed as a complementary ingredient rather than a primary corrective agent.

Uses In Skincare & Cosmetics

Found in spot gels, post-blemish serums, and brightening creams to complement routines targeting marks or tone, often within lightweight gel or serum formats.

Comedogenic Rating

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

Safety

Carries an irritation/sensitization risk, especially on compromised or sensitive skin; patch testing is advisable. Use cautiously around eyes or damaged skin. No common regulatory restrictions are noted for standard cosmetic use.

Is Allium Cepa (Onion) Bulb Extract a Good Ingredient?

It earns a Fair rating here: offers antioxidant constituents, but evidence for improving the appearance of marks or tone in leave-on cosmetics is limited and extract quality varies. Potential for stinging or sensitization from sulfur-containing compounds lowers the rating.

Products with Allium Cepa (Onion) Bulb Extract

Related Ingredients