Preventing acne from coming back after treatment involves making certain lifestyle changes and following a consistent skincare routine. This includes washing your face twice a day with a gentle cleanser, avoiding touching your face with your hands, avoiding excessive sun exposure, and using non-comedogenic skincare and makeup products. Research has shown that certain dietary factors, such as a high glycemic load diet and dairy consumption, may also contribute to acne. Therefore, incorporating a healthy, balanced diet with plenty of fruits and vegetables may also help prevent acne from coming back. It's important to continue regular check-ins with a dermatologist for follow-up treatments and guidance on maintaining clear skin.