To get rid of butt acne, also commonly caused by folliculitis (infection of hair follicles), the following approaches are recommended:

• Wash the area regularly (morning and evening) with gentle cleansing to remove dirt, sweat, and bacteria, but avoid over-washing as it may irritate the skin.
• Wear loose-fitting clothing made of breathable fabrics to reduce friction and sweat buildup.
• Avoid sitting for long periods on hard surfaces; sitting on a warm washcloth can soothe and open pores.
• Use natural remedies like diluted tea tree oil for its antimicrobial properties and consider zinc creams, although more evidence is needed on zinc's effectiveness.
• Shower immediately after sweating or exercise to prevent bacterial growth.
• Exfoliate gently with mild chemical exfoliators like glycolic acid or salicylic acid rather than harsh scrubbing to avoid irritation.
• Avoid popping pimples to prevent inflammation and scarring.
• Saltwater solutions or vinegar baths can also help due to their antimicrobial effects.

In severe cases, medical treatments like oral or topical antibiotics, or isotretinoin, might be necessary after consulting a doctor.