The time it takes for dark spots to fade depends on several key factors your skin type, the cause of the discoloration, the depth of pigmentation, and how consistent you are with your skincare routine. On average, dark spots from acne or sun damage may take 4 to 12 weeks to noticeably fade with the right ingredients like vitamin C, niacinamide, or AHAs. However, deeper spots or melasma can take longer, sometimes several months, especially without proper sun protection. The key is patience, consistency, and using products that support your skin’s natural regeneration cycle.