"The most direct harm of manicure is the damage to the fingernail." Yang, chief physician of the Department of Dermatology and Sexology, Peking University No.1 Hospital, said that the nail itself is a hard horny structure, and its integrity is very important for the health of the deck. When doing manicure, in order to increase the adhesion of nail polish, the oil on the nail surface will be removed and the nail surface will become rough. "These operations will not only make nails thinner, less tough and brittle, but also increase the risk of infection, such as onychomycosis (fungal infection of the deck, that is, onychomycosis), because it destroys the integrity of the deck."
When manicurists do manicures, they usually peel off the small nail skin and the lower nail skin. Nail cuticle is a thin, translucent arc-shaped protective film on the surface of nail root, and nail cuticle is a horny film in nail seam. Although these two structures are inconspicuous, they can seal the gap between the deck and the skin around the nails and protect the nails from harmful factors in the environment. Yang said that peeling can easily make some harmful substances, irritants and microorganisms directly damage new nails, nail beds and nail substrates. The cuticle of nails is seriously damaged, and new nails may grow unevenly; If the subcutaneous tissue of the nail is seriously damaged, it is easy to form nail separation. In addition, if the nail groove on both sides is damaged, it will increase the risk of pathogenic microbial infection, including bacteria, viruses, fungi, etc., which can cause paronychia and onychomycosis.
"The organic solvents used in nail art are volatile, and inhaling these ingredients will cause irritation to the respiratory tract. Depletion water and hardener often contain harmful substances such as acetone and formaldehyde, which will cause certain harm to the body if used frequently or in large quantities. " Yang stressed that the colorant for nail dyeing contains heavy metals, and if it is used too frequently, it will increase the risk of heavy metal poisoning. Nail polish can also cause allergic reactions of sensitive individuals, leading to repeated redness, running water and desquamation around nails, and even some people touch their eyes and face with trimmed hands, causing facial allergic dermatitis.
Regarding nail patches, Yang said that adhesives used in nail patches may also cause irritation and allergies. In addition, the nail plate itself is relatively hard and long. If you don't pay attention to it in your daily life, the deck is easily subjected to external forces of collision and upturning, resulting in damage to the nail bed and nail mother.
"There are many hand activities in daily life, such as typing, scrubbing or carrying things. And do as little or no manicure as possible. " Yang pointed out that people who often soak their hands in water tend to turn some parts of their nails green because they suffer from green nail syndrome. There is a normal skin parasite called Pseudomonas aeruginosa, which is easily overproduced under wet and broken nails. The pigment produced by bacteria causes the deck to turn green.
Patients with diabetes, fingertip vascular and neurotrophic disorders, such as Raynaud's syndrome, scleroderma and other diseases are not recommended for manicure. "On the one hand, these patients have a high risk of infection after local injury, on the other hand, their healing ability after trauma is poor." Yang reminded that people with athlete's foot and onychomycosis don't recommend manicure, which will not only easily lead to their own infection, but also increase the risk of cross-infection because of the mixed nail tools, such as warts (commonly known as "warts"), hepatitis B and syphilis.