Health risks caused by substances that pose a safety risk can lead to adverse reactions in the human body. For example, adverse reactions caused by the use of cosmetics are divided into general adverse reactions and serious adverse reactions.
General adverse reactions have a variety of manifestations, the most common of which are itching, burning and tightness of the skin, erythema, papules, edema, etc. In severe cases, blisters, vesicles, exudation, etc., and even systemic damage; some cosmetics can also lead to abnormal skin pigmentation, hair damage, mouth and lip rashes, finger/toenail deformities, and cause or aggravate acne. From a diagnostic point of view, they include: cosmetic contact dermatitis, cosmetic acne, cosmetic hair damage, cosmetic nail damage, cosmetic photosensitive dermatitis, cosmetic skin pigmentation abnormalities, cosmetic contact urticaria, cosmetic labyrinthitis, etc.
Serious adverse reactions refer to severe damage to the skin (including mucous membranes) and its appendages caused by cosmetics in a large or deeper area, as well as systemic damage to other organs and tissues. They usually fall into the following five categories:
? resulting in temporary or permanent loss of function, affecting normal human and social functions, such as obvious cosmetic changes, lasting lesions that do not heal, scar formation, permanent hair loss, etc.
? leading to systemic damage, such as sepsis, abnormal liver and kidney function, anaphylaxis, etc.
? resulting in congenital abnormalities or teratogenicity
? leading to death or a life-threatening situation
? other serious categories that require hospitalization as deemed necessary by medical institutions