Healing Acne Scars? Sun Protection Stops Them Darkening
After scar treatment, sun can darken the very skin you're trying to heal — here's the dermatologist-backed protection plan for the weeks that matter most.
After acne-scar treatment, sun exposure can darken treated skin; the American Academy of Dermatology advises daily broad-spectrum SPF 30 or higher and limiting sun exposure for 6 to 8 weeks, even on cloudy or cool days.
Dermatologists emphasize that post-procedure skin is especially prone to hyperpigmentation, so the AAD frames diligent daily sunscreen during recovery as part of the treatment itself — not an optional add-on.
Questions we get a lot
How long should I avoid the sun after acne scar treatment?
The American Academy of Dermatology advises limiting sun exposure for about 6 to 8 weeks after acne-scar treatment. During that window, treated skin is especially prone to darkening, so daily broad-spectrum SPF 30 or higher is recommended. The guidance applies even on cloudy or cool days.
Why does sun darken acne scars during recovery?
Treated skin is inflamed and more reactive, so UV can trigger excess pigment that leaves darker marks where you're trying to heal. That's why the AAD pairs scar aftercare with daily sunscreen — protection keeps treatment results from being undone by post-inflammatory darkening. Sun protection here is part of the treatment plan, not an afterthought.
r/SkincareAddiction: 'Just had a round of microneedling for acne scars and my derm said no sun for weeks — do I really need SPF indoors and on gray days too?'