There is no particularly effective way to prevent acne, but by controlling your diet, paying attention to hygiene, and maintaining a good daily routine, you can effectively reduce the symptoms of acne. 1. Diet control. Try to maintain a low-salt, low-fat and low-sugar diet, avoid spicy and stimulating foods, avoid alcohol, eat more fresh vegetables and fruits, and drink more water. 2. Pay attention to hygiene. The accumulation of oil secretion on the surface of the skin will aggravate the symptoms of acne, so pay attention to keep the skin clean and dry in daily life, and wash in time after exercise. 3. Maintain good daily habits. Avoid the use of oily cosmetics, excessive washing of the skin and skin irritation. The formation of acne is also related to abnormal hormone secretion levels in the body. If necessary, some medications can be given as prescribed by the doctor.