Many girls with acne on their faces have been on the front line of the fight against acne, using all kinds of methods to fight “acne” more than, but acne always went down and came up again. The actual cause of the acne is actually what causes it, which has internal and external causes. A, androgen The androgen was mentioned earlier, because it often has a direct inducing factor for the acne trigger. The sebaceous gland is one of the target organs of androgens, which means that the development and secretion of the sebaceous gland is directly governed by androgens. This is the basis for acne. Acne is closely related to endocrine secretion, but to be precise, the proliferation of acne is not necessarily due to endocrine disorders, because many people have normal endocrine secretion and also acne, but are prone to acne when the ratio of androgen to estrogen in the body is imbalanced. Excessive androgens can increase skin keratinization at the follicle pores or sebaceous gland openings in the skin. If the follicle opening is overly keratinized, it will block the follicle and sebaceous gland openings like a plug, so that the oil that needs to be secreted through the pores cannot be easily discharged. At our age, due to the endocrine influence, androgens not only make the skin of the hair follicle mouth hyperkeratotic, but also make the secretion function of the sebaceous glands more active and strengthened. Thus, on the one hand, the outlet is blocked first, but on the other hand, it keeps on secreting, and as a result, it is easy to block inside the hair follicle to form a sebaceous plug. The development continues, because it is blocked, the hair follicle inside into an anaerobic environment, which is conducive to the excessive reproduction of bacteria, growth, further stimulation of the skin, so that local inflammation, or even pus, on the growth of acne. Second, the genes We will have a feeling that after the appearance of acne in a certain area, in a period of time will prefer this area, as if about the same. It even sometimes feels like a resurrection in situ. In fact, the area where the pimples appear is usually a relatively high sebaceous gland secretion or a problem with the sebum drainage pathway in that area. The follicle that first appeared in the area may be accidental, but after the pimple appears, the inflammatory response may narrow the original pathway even more, so it may even be the same follicle over and over again. This is how the skin gets a “memory”. There is also a situation where some people prefer to have pimples on their cheeks, others have pimples on their foreheads, and some don’t have much pimple expertise on their faces on their chests and backs. This overall, related to the body type, in your mother’s womb has been decided. But even if you are destined to grow acne parts, it does not mean that you will definitely grow acne ah! It is only that this part has a higher chance of breaking out. The actual fact is that you can find a lot of people who are not able to get a good deal on a lot of things. Excessive use of topical products containing salicylic acid will instead make your skin drier, which will lead to more oily skin. Because the active ingredient frequently burns the epidermis layer of the skin slightly, but will make the pimples more exposed. 2, thought the sun can kill germs, so never sunscreen The sun can indeed eliminate bacteria and kill insects, but can not achieve the effect of sterilization of facial acne, but rather easy to be sunburned, many substances will enter from the broken skin, causing skin inflammation. In addition, people with acne are often afraid to rub sunscreen for fear of clogging their pores. In fact, most sunscreens are now very safe, you can choose a mild and light sunscreen. 3, always wash your hair in the shower I believe that many people also figure convenient, often in the shower by the time you wash your hair. But you do not realize that the shampoo and hair care products on our face damage. This is pouring sulfates, heavy moisturizers and also silicones these chemicals on the face simply! If you don’t rinse well and have residue, it will definitely cause acne. So it is recommended that you wash your hair separately, or be sure to wash it together, just to ensure a thorough rinse. 4, abuse of hormonal drugs Common drugs are dermaplanin, eutropharmacy, halometasone, paregoric pine, etc. There are many kinds of topical preparations containing hormones, with different ingredients and even more complicated trade names. These drugs can cause hormone-dependent dermatitis if used for too long. Many acne abuse hormones, and the symptoms flare up quickly and get progressively worse after stopping use. Both disfigure and make the skin become fragile and sensitive, the protective barrier is damaged. 5, irritating ingredients of cosmetics and unclean makeup tools Many people because of acne, more afraid to face to see people, cosmetics fiercely to face paste. But cosmetics inevitably have stimulating ingredients, such as lanolin, which is very good for dry skin, can moisturize the skin, but people with acne is not suitable. Then again, for example, many products will have mineral oil, some people are more sensitive to mineral oil, easy to grow acne, and acne with it will be very boring to the skin, easy to aggravate the infection. Artificial fragrances can also stimulate the skin! So it is better to try to choose fragrance-free cosmetics. And in the makeup removal, there will be a variety of rubbing action on the skin, which will certainly stimulate the acne, affecting its treatment process. In addition, makeup brushes are easy to ignore. They are the hardest hit area for bacteria and dead skin cells to gather, and must be cleaned regularly. Warm tip: Your face should be air-dried before using makeup brushes to prevent your face from being infected with bacteria. 6, the hot and humid nature of the living environment In a hot and humid environment, sebum secretion is more vigorous. If too much sebum is secreted, it is very easy to lead to blockage of the hair follicle sebaceous gland ducts, thus causing bacterial infection and inflammatory reaction, which in turn can easily give birth to a face acne. As long as you know how to take care of it on a daily basis, understand these internal and external man-made causes and avoid the minefield, you can also reduce the possibility of acne breakouts.