Cleaning product allergens cause millions of contact dermatitis flare-ups every year, and the culprits are usually the same handful of ingredients: synthetic fragrance blends, sulfates like SLS, and preservatives like methylisothiazolinone. This guide walks through the actual triggers, the mechanisms behind contact and respiratory reactions, and what to look for on labels so you can avoid the worst offenders without resorting to vague "natural" marketing claims.
