The appearance of acne is mostly associated with environmental changes, stress stimulation, poor lifestyle habits, and a reversed day and night work schedule. It is often closely related to stress, lack of sleep, fatigue, constipation and other physical and mental aspects of poor metabolism. According to statistics, urban women with combination skin between the ages of 25-35 are most likely to breed acne. The reason for the formation of acne: on the one hand, it is caused by improper use of cosmetics, and secondly, the pressure on the human body indirectly becomes the culprit of acne. The climate change, sebaceous gland secretion regulation failure, there will be acne bursts, plus this will be winter, dry weather, emotional anxiety and tension, diet inattention will also be easy to pop acne. In addition to sebum secretion, acne, increasing pore keratinization, and bacterial damage are among the “culprits”. The evolution of acne skin illustration 1, white acne blocked skin pores under the keratin and sebum make the skin sharp swelling, white with yellow, as if sebum, rough but no pain. 2.Black pimples (blackheads) evolved from white pimples keratin and sebum harden and oxidize under the action of air and dust to become black, rough but painless. 3.Red pimples Black pimples exist in the pores for a long time and decay due to bacteria or other triggering factors, causing inflammation. It is red in color and painful. 4.Yellow pimples (acne) Red pimples deteriorate further and the inflammation deep in the skin becomes more and more severe. That is, the red acne becomes pus-filled. The actual fact is that you can’t help but touch your face with your hands, which often causes bacteria to breed in the skin on your face, thus producing acne; 2, hair is not clean and easy to stimulate the skin on your face, growing annoying acne; 3, fast food, snacks and other junk food, easy to cause constipation, love to eat snack not only bad for the stomach, but also will cause constipation, leading to acne.