The formation of freckles is mainly due to excessive melanin production by melanocytes in the basal layer of skin epidermis. Melanin comes from tyrosine contained in foods such as cheese. Under the action of enzymes in vivo, tyrosine is converted into dihydroxyphenylalanine and then oxidized. When melanotropin increases for some reasons, it can cause pigment metabolism disorder and freckles on the skin.
Freckles generally appear after 5 years old and have a certain genetic tendency. Because of estrogen, women have more freckles than men. In summer, the sun increases and the color of freckles deepens, which has a great influence on beauty. Although freckles are lighter in color in winter, they will not disappear completely. It is observed that people with more freckles have a higher incidence of pigmented nevus.
In the cosmetics market, there are many kinds of pharmaceutical cosmetics that have certain freckle removing effects. However, no matter what cosmetics some people use, the curative effect is not ideal. So is there a more ideal treatment? In recent years, China has adopted many new methods to treat freckles. One is liquid ammonia spray cryotherapy, which is suitable for people with uneven freckles and large plaques. Generally, after cryotherapy or ion therapy, freckles will form a thin purple scab within 48 hours, and the scab will fall off on its own in 7~ 14 days, and the spots will disappear. This method requires the surgeon to be skilled, the curative effect is ideal, the effective rate is above 95%, and the cost is not high. Secondly, superficial cauterization of reputation spots by ionization therapy machine or spot scanner, and another method is grinding to treat freckles cosmetically. Suitable for people with white skin, dense freckles and large area. Because the spots of the famous spots are shallow, gently grinding off the epidermis during polishing can destroy the melanocytes in the basal layer of the epidermis, thus playing an ideal therapeutic role.
With the development of cosmetic and plastic medicine, drug shedding came into being. Generally, phenol preparations are used for facial freckles. After the liquid medicine acts on the skin freckles, it will produce a layer of scab skin. About 5~7 days, the fool's skin will fall off and freckles will be eliminated. This method is painless, simple and effective, and can also remove fine wrinkles and uneven scars on the face, making the facial skin rosy and plump.
It is worth pointing out that with the growth of new epidermis after skin shedding, it begins to appear deep red, and some people may have pigmentation after a period of time, and the pigmentation date is different. Generally, people with white skin color have shallow pigmentation and short reaction period. People with darker skin color have a longer pigmentation period, which can reach six months to a year or even longer. Most people will fade naturally when their new pink skin matures. During the pigmentation reaction, attention should be paid to avoiding sun exposure, and at the same time, sunscreen whitening cosmetics (skin cream) and anti-melanin drugs such as oral vitamin C can be applied. Regular mask skin care will shorten the process of pigmentation reaction. Epidermis can destroy melanocytes in the basal layer of epidermis, thus playing an ideal therapeutic role.
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