For healthy weight gain, focus on a nutrient-dense, calorie-surplus diet. You can support this with protein supplements (like whey or soy protein) and multivitamins. Avoid prescription weight-gain stimulants unless specifically advised by a doctor. To treat pimples, effective topical options include over-the-counter creams containing benzoyl peroxide, salicylic acid, or adapalene. These help clear pores and reduce inflammation. For persistent or severe acne, a doctor can prescribe topical or oral antibiotics. Please consult a healthcare professional before starting any new supplements or treatments to ensure they are safe and tailored to your specific health needs.