What Are White Freckles?

Facial freckles are small dark brown spots that occur on the face. They usually show skin lesions around the age of 5 and often get worse around puberty. It appears as light brown or dark brown dot-like pigmentation spots, round, oval, or irregular, with clear boundaries, generally about 2mm in diameter, smooth surface, isolated but not fused, and uneven distribution. Without any conscious symptoms. This disease is an autosomal dominant hereditary disease and has a clear relationship with sunlight. The number, size, and color of pigment spots depend on the amount of sunlight absorbed and the tolerance of the individual to sunlight. The number of freckles in summer is large and the size is large. , Dark brown, lightened in winter.

Facial freckles

Facial

Start small things and say goodbye

There are certain melanin cells scattered in the basal layer of human skin. Melanocytes constantly produce melanin, which protects the body from various rays (mainly ultraviolet rays) in the universe. Due to the difference in the amount of melanin contained in the skin, there are black people, yellow people, and white people. Freckles are formed by melanocytes that have been genetically altered. The mutated melanocytes are larger than ordinary melanocytes, and dendritic processes increase and increase. The dendritic processes are full of melanin, and black spots are revealed on the skin surface. The mutated melanocytes are like the sea anemone's mother body, and the dendrites are like many antennae on the anemone. Laser, freezing, grinding and other physical freckle methods are intended to destroy the structure of freckles under the skin through mechanical action to achieve the purpose, but the melanocytes are scattered in the basal layer of the skin. If the damage is too deep, it reaches and exceeds the basal layer , The injured part will not be repaired normally, and a scar is formed. Therefore, these physical methods only dare to hurt the epidermis above the basal layer, that is, only the branches and windows are destroyed, or only the melanocytes are punctured. It's like cutting off some of the anemone's tentacles, or only stabbing the anemone's body, but the anemone will soon repair the wound and grow new tentacles. As for the freckles, the mutated melanocytes grow new dendrites, and the dendrites are filled with melanin. The freckles appeared on the skin again. The principle of cosmetic freckle is to use hydroquinone and its derivative to prevent the amino acid from transforming melanocytes to produce melanin. The general freckle cosmetic also contains a certain amount of skin exfoliating agent, which promotes the renewal of the epidermis as soon as possible to achieve the effect of freckle and reduce spot color. However, because the pathological structure and cause of freckles are different from other pigmented spots, many cosmetics with obvious effects on pigmented spots have little effect on freckles.