For pimple marks and uneven skin tone, use a daily serum containing Vitamin C in the morning and Niacinamide, Kojic Acid, or Retinol at night. For dark circles, look for an under-eye cream containing caffeine, hyaluronic acid, or peptides. Most importantly, apply a broad-spectrum SPF 30+ sunscreen daily, as UV exposure worsens all forms of hyperpigmentation. For stubborn spots, a dermatologist can prescribe targeted treatments like azelaic acid or hydroquinone. Always introduce new products gradually.