What reason is facial expression long spot

summary

Freckles on the face is a very troublesome thing, and there are many kinds of freckles, such as freckles and so on. Many people don't know what causes freckles. Now I'll share what causes freckles on the face, so that we can know more about them.

What reason is facial expression long spot

The first reason: freckles: 99% from genetic, about 5 to 6 years old between the formation of blue hair in white people is quite common, but Asians also have more. The age of occurrence is before puberty. Light brown spots with the size of about 1 to 2 nm are produced in the parts exposed to sunlight. The size, number and pigment depth of the spots increase in summer and improve in winter.

The second reason: melasma: also known as butterfly spot, liver spot, light brown, flaky, patch size, clear boundary, irregular shape, not higher than the skin, common in the face, symmetrical in the cheek, the main reason is related to endocrine, female hormone imbalance.

Reason 3: sunburn: as the name suggests, it is caused by the sun, so it is easy to occur in the middle-aged people of 40 and 50 years old, both men and women, but some people grow up earlier in their 20s and 30s. Clinically, sunburn is a well-defined brown black spot. The lesion can be as large as ten yuan coin. The most common sites were the face, back of hands, back, chest, upper and lower limbs, but the lesions on the face were larger and more obvious.

matters needing attention

1. Avoid sunlight and ultraviolet radiation. If you are active in the sun for a long time, you can apply sunscreen on your face to avoid tanning. 2. Don't use those substandard skin care products indiscriminately, in order to avoid more skin spots. 3. The face should be clean and free from residual substances and bacteria.