There are many reasons for pimples on the buttocks: 1. New underwear bought from the store without washing is worn directly, resulting in pimples due to skin allergy on the buttocks. 2. The skin on the buttocks is damaged due to long-term sedentary, a lot of sweating on the buttocks, friction in tight clothes, etc., plus the buttocks are in a humid environment for a long time triggering bacterial infection and pimples appear. The company’s main business is to provide a wide range of products and services to its customers. The bumps will gradually disappear.