Blemishes and pimples are usually due to Acne vulgaris and can be managed with simple care-wash your face twice daily with a gentle cleanser, avoid oily or heavy creams, and don?t pick or squeeze pimples. Use topical treatments like Benzoyl peroxide or a mild retinoid at night, apply sunscreen daily to prevent dark marks, and maintain a healthy diet with less junk food. If acne or marks are persistent or severe, consult a dermatologist for proper treatment.