Acne can be divided into closed acne and blackhead acne. Most of the reasons for closed acne on the face may be metabolic disorder caused by staying up late, and poor skin conditioning leads to acne.
The specific reasons for the formation
internal cause
1. Excessive androgen secretion: it is the main reason. In particular, excessive secretion of male hormones in adolescence is the main reason for the formation of "acne". Androgen can directly stimulate the increase of sebaceous glands, promote the keratinization of hair follicles, block pores, cause inflammation, and thus produce acne and blisters.
2. It is related to women's physiological cycle: some women get worse blisters before menstruation. Mainly related to changes in hormone secretion.
3. Internal diseases or dysfunction of the body: such as stomach, kidney, liver and other organ diseases, especially gastrointestinal dysfunction and constipation. Can induce acne.
4. Mental stress, excessive fatigue, lack of sleep, etc.
5. Overeating greasy, hot and sour food and sweets.
(B) external factors form closed acne
1. Improper cleaning: causing pore blockage and bacterial infection.
2. Improper squeezing, picking and needle picking: Some people have acne and squeeze at will, causing bacterial infection.
3. Apply inferior cosmetics, such as dual-purpose powder and foundation.
4. Ultraviolet rays and some chemicals.
Of course, it is still an old saying that external factors are better than internal factors, just like saying that the same people stay up late but have good skin, eat Chili but have no acne. The reason is that the bottom layer of skin is healthy.
However, our skin care products in seven old are a process of nourishing the skin internally and externally, and the muscle base is clean inside and outside.