Makeup can change the external mental appearance of the human body, especially for women, makeup is an important activity in life, but women often do not pay enough attention to the side effects of various types of cosmetics. Regular makeup can cause more hazards, as follows: 1. Allergy: Some cosmetics may contain allergenic substances, or the pH value of cosmetics is too high or too low, which can lead to allergic reactions for users with allergic constitution, and is also a common skin damage; 2. Causing skin damage: If makeup is applied incorrectly or with too much force, it can easily lead to skin surface damage, making cosmetics clog the pores and skin problems such as acne and blackheads appear. In addition, cosmetics contain certain metal chemical ingredients, which can easily lead to dull, rough or wrinkled skin in the long term; 3, sensitive and fragile skin: cosmetics are complex in composition, and for fragile skin, frequent makeup can easily cause damage to the skin stratum corneum, making the skin more sensitive; 4, skin infection: cosmetics are rich in nutrients in order to achieve certain skin beauty effects, and they are also a good environment for microorganisms to breed. It is a good environment for microorganisms to breed, and if you use contaminated cosmetics, it will cause skin infections. Therefore, you should reduce the number of makeups in your life and take proper skin care to avoid the harm brought by makeups in order to improve your skin quality.