Xiaolai lecture hall: cosmetic damage
In the first two Xiaolai classrooms, we have introduced “cosmetic contact dermatitis” and “cosmetic contact dermatitis” in cosmetic skin adverse reactions. In this issue, we will continue to introduce cosmetic nail damage.
Finger nail is one of the important attachments of human skin. People like the nails on the hands of the hands are faster than the nails on the other hand; the nails of the middle finger are longer than other fingernails. People’s daily activities are inseparable from A, have you known about its basic structure and function?
The anatomy of the human armor is composed of a deck, a nail bed and a nail matrix.
The deck is mainly composed of keratin, which is divided into a dorsal layer, an intermediate layer derived from a mother and a ventral layer adjacent to the nail bed. The nail bed is made up of a number of non-keratinized soft tissues under the deck, which are rich in blood vessels. The nail matrix is a dense, proliferating and active epithelial layer with more abundant blood vessels.
The nail is both our spear and our innate protective shield.
The basic functions of A include assisting the delicate work of the hand and protecting the fingertips from damage.
Definition of cosmetic nail damage
(There are serious injuries hidden behind the colorful nails)
Cosmetic nail damage refers to the long-term application of a cosmetic causing dehydration and defatting of the nail to cause normal structural damage, resulting in nail lesions such as nail stripping, nail softening, nail embrittlement and periungitis.
Common causes of cosmetic nail damage
The organic solvent in the makeup remover oil can cause the deck to lose its luster, become brittle, deformed, longitudinally cracked, etc. The dyes or pigments in the nail cosmetic can cause irritating reactivity, allergic reaction, phototoxicity and photoallergic periungual dermatitis. .
Cosmetic nail damage clinical manifestations
Cosmetic nail damage can cause nail lesions such as nail stripping, nail softening, nail embrittlement and periungual inflammation. The severity of nail damage is closely related to the amount of cosmetics used and the frequency of use. When the use of the cosmetic is stopped, the nail damage is generally impossible to change, and the periungual dermatitis can be alleviated or even subsided. The same nail damage and periungual dermatitis will occur if the cosmetic is used again.
Laboratory diagnostic method for cosmetic nail damage
Closed patch test, repeated open use test and spot patch test can help the diagnosis of periarthritis.
Microscopic observation of the nail is helpful in confirming the diagnosis.
Chemical analysis of nail cosmetics is also conducive to the diagnosis of cosmetic nail damage and periungual dermatitis.
Cosmetic nail damage treatment principle
Discontinue any cosmetic products and thoroughly clean the nails of nails and nails. Symptomatic treatment for general nail damage and periungual dermatitis.