Methylparaben may cause breast cancer when used in large quantities for a long time, and may also cause other types of tumor diseases, which is not conducive to good health, and is generally not carcinogenic, and occasional use of the body will not have too great an effect on the body, avoid long-term exposure to methylparaben. Methylparaben is a colorless crystal or white crystalline powder, easily soluble in alcohol, ether and acetone, slightly soluble in water, with broad-spectrum antimicrobial activity, mainly used as a preservative, such as food, cosmetics, pharmaceutical bactericidal preservatives and feed preservatives. Usually the methyl hydroxybenzene in food and cosmetic products stays within the safe range, there is almost no risk of carcinogenicity, so you don’t need to pay too much attention to it. If you use low-quality cosmetic products or three-unit products with high content of methyl hydroxybenzene, the risk of carcinogenicity is higher, and it is recommended that you usually choose products with low content of methyl hydroxybenzene in your choice of cosmetic products, food, and medicines. Methylparaben is prone to irritating effects on the skin or mucous membranes, and may cause symptoms such as contact dermatitis and urticaria angioedema, etc. It is recommended that skin care products be changed regularly or that products with less methylparaben content be selected.