The love of beauty is an instinct of women, born with it, can not be dispersed, because of this, cosmetics have become the spiritual support of women, so cosmetic selection and improper use of what will bring confusion to women who love beauty? Cosmetic contact dermatitis]: This is the most common type of cosmetic dermatosis. As a result of contact with cosmetics and cause irritant contact dermatitis and allergic contact dermatitis, mostly occurs in the face and neck, erythema, burning, flaking, papules and other changes. Cosmetic photosensitive dermatitis]: Inflammatory skin changes caused by light exposure after using cosmetics are phototoxic reactions or photomimetic reactions of skin mucosa caused by photosensitive substances in cosmetics. Cosmetic skin pigmentation abnormalities]: It is skin pigmentation or pigment loss caused by the use of cosmetics. Pigmentation is more common and occurs mostly on the face and neck, and can occur alone or simultaneously with skin inflammation, or after contact dermatitis or photosensitive dermatitis. Cosmetic acne]: It is an acne-like rash on the face caused by cosmetics. It is caused by mechanical blockage of the hair follicle opening by cosmetics, such as inappropriate use of foundation creams, flawless creams, scrubs, and other products that cause blackheads and pimples or aggravate existing acne, and can also cause inflammation of the hair follicles. Cosmetic hair damage]: It is hair damage caused by the use of cosmetics. Clinically, it can be manifested as changes in hair quality and breakage, splitting and discoloration, brittle texture, loss of luster, etc. Hair loss of varying degrees can also occur. Cosmetic nail damage]: The use of nail cosmetics caused by the nail itself and the lesions of the tissue around the nail. Nail cosmetics are roughly divided into three categories: repair supplies, such as epidermal removers, polishes, etc. Coloring supplies, such as various colors of nail polish, and removal supplies, such as nail shampoo. These cosmetic ingredients contain more organic solvents, synthetic resins, organic dyes, pigments and certain restricted compounds, such as acetone, potassium hydroxide, nitrocellulose, etc. Most of them have a certain degree of toxicity, irritation to the nails and skin, and allergenic, such as primary irritant dermatitis can be caused by certain ingredients in the nail plate cleaner, epidermal remover, allergic contact dermatitis can have nail polish in the resin type, the The nail hardener in the formaldehyde and other ingredients induced, photosensitive dermatitis can be caused by a variety of fluorescent substances in nail polish, etc..