Analysis Finds Allergens in Many Topical Scar Products


A study found that over half of over-the-counter topical scar products contain allergens. Researchers searched for scar products on various retail websites and found 156 products. Of those, 55.2% contained at least one North American Contact Dermatitis Group (NACDG) allergen, with fragrance, phenoxyethanol, parabens, panthenol, and sodium benzoate being the most common. The study also found that the American Contact Dermatitis Society’s Contact Allergen Management Program had only five scar products listed, suggesting it may not be a reliable source for patients with known allergies. The study recommends patients conduct a “use test” on their inner forearm before applying scar products. Limitations include the selection of retailers and potential ingredient list inaccuracies. No financial conflicts of interest were reported, and the research was supported by a grant from the National Institutes of Health/National Cancer Institute.

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