Onion

Organic disulfides make up most of the oil, propyl propanethiosulfinate and other sulfides. Strong skin and mucous membrane irritant.

May inhibit platelet aggregation. Use orally with caution alongside anticoagulants.

NOT recommended for dermal cosmetic use. Strong characteristic allium aroma.

Avoid contact with eyes and mucous membranes.

Allium cepa is the most familiar culinary herb in the world. Cultivated everywhere for food.

The essential oil is distilled from bulbs in very small quantities, primarily used as a food flavoring, not in cosmetics.

Family Amaryllidaceae (or Liliaceae under older classification), same family as garlic, leek, and shallot.

Listed in for database completeness, but cosmetic applications are essentially nil.

Distinct from onion fixed oil, sometimes also called 'onion oil'.