The causes of acne in patients with dry skin, mainly consider the following aspects: a. Damaged skin barrier: especially dry skin will weaken the barrier function, coupled with dryness will appear acne. Weakened skin barrier function makes the skin’s water loss faster, further exacerbating dryness, thus forming a dehydration phenomenon. At this time, you can apply moisturizing and repairing skin care products, such as those containing hyaluronic acid and ceramide ingredients, which can speed up the repair of the skin barrier and reduce pore blockage, as well as reduce the formation of acne. Second, incorrect cleaning: can cause abnormal sebaceous gland metabolism, can also appear too little sebum secretion, insufficient moisture content in the skin is the first step in clean skin care, excessive cleaning of the skin, especially the number of face washing is too frequent, causing the skin barrier to be damaged, causing dry skin, will appear acne generation. This is the time to choose a mild, low-foam cleansing product, such as a cleanser containing hyaluronic acid or amino acids, to cleanse the skin of the face. Three, do not pay attention to sun protection: after exposure to the sun, the skin moisture evaporates too quickly, the skin acne phenomenon, and the skin will also appear aging, then you need to do a good job of sun protection, need to apply sunscreen, isolation cream, as well as play umbrella, car, wear a hat. Four, unhealthy diet: long-term intake of large amounts of milk, high sugar, and peanuts and other foods, causing acne on the face. Five, lack of trace elements and vitamins: can affect the intestinal flora, calcium and zinc can help reduce inflammation, so you can take oral calcium zinc gluconate oral solution to reduce the generation of acne. Therefore, for patients with dry skin acne, it is recommended to go to a regular hospital for treatment.