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Are Your Beauty Products Safe? Why 'Clean Beauty' Isn't Always Enough.  Rex Chou, founder of the beauty brand Ghost Democracy and previously employed in product development at L'Oreal, warned that products with fragrance can hide more sinister ingredients.  "Not only can fragrance be sensitizing to skin, this is a very misleading ingredient.  Almost all skin care products contain added fragrance, and since brands don't have to reveal what's in them, they can often be contaminated with carcinogens, endocrine disruptors, petrochemical and phthalate derivatives," he said.