Paste any ingredient list. See exactly which ingredients are known rosacea triggers: vasodilators, barrier disruptors, and mast cell activators. Backed by 1,709 validated ingredients.
According to Health AI, rosacea is classified as a dermatologic consequence of histamine intolerance due to impaired DAO activity (PMID 23814966). Mast cell degranulation through the cathelicidin/LL-37 pathway is central to rosacea pathogenesis, which means both dietary histamine and topical mast cell activators contribute to flares. Your dermatologist can review your prescription, but this tool checks every over-the-counter ingredient your dermatologist does not see.
Most rosacea patients know to avoid alcohol and fragrance. But products contain 15 to 40 ingredients, and many lesser-known triggers (cinnamaldehyde, menthol, certain emulsifiers) slip through. This tool checks the full list against the same evidence-graded database used by 75,000+ community members.
Ingredients that open blood vessels and cause flushing: niacin (niacinamide at high concentration), menthol, camphor, capsaicin. The flush itself damages the vascular endothelium over time.
Ingredients that compromise the skin barrier: alcohol denat, sodium lauryl sulfate, strong retinoids. A compromised barrier lets irritants penetrate deeper and triggers inflammation.
Ingredients that trigger mast cell degranulation through non-histamine pathways: certain fragrances, preservatives, and botanical extracts. These activate the cathelicidin cascade.