Original sentence: Once a niche market, certified organic products are becoming more mainstream.While there is assurance from the largest cosmetic companies that their various ingredients are safe, there is a growing preference for cosmetics that are without any "synthetic" ingredients, especially those derived from petroleum
Edited sentence: Cosmetics may cause harm.Cosmetics with fragrance or preservatives are the common causes of skin irritation.Once a niche market, certified organic products and totally non-toxic makeup are becoming more mainstream as completely natural products demonstrate their ingredients to be as effective as those of the leading cosmetic companies.Other harm is caused by the misuse of cosmetics.Wearing cosmetics to bed, sharing cosmetics, scratching yourself with a mascara wand, and aerosal fumes all are dangerous consequences of cosmetic use.While there is assurance from the largest cosmetic companies that their various ingredients are safe, there is a growing awareness and preference for cosmetics that are without any synthetic ingredients, especially those derived from petroleum, SLS, and parabens