Detailed answer

To prevent blackheads on the back, it is important to exfoliate regularly to remove dead skin cells and unclog pores. Use a gentle exfoliating scrub or a chemical exfoliant containing ingredients like salicylic acid. Additionally, keep the back clean by washing it with a gentle cleanser and warm water daily. Avoid using harsh soaps or scrubbing too vigorously as it can strip the skin's natural oils and irritate it. After cleansing, make sure to thoroughly dry the back to prevent moisture build-up. Also, consider using non-comedogenic moisturizers and avoid wearing tight-fitting clothing that can trap sweat and oil on the back, potentially leading to blackheads. If the problem persists, consult a dermatologist for further guidance.