From the Guidelines
Sun protection is highly recommended after 6 months following scar revision surgery to prevent hyperpigmentation and maintain the cosmetic appearance of the revised scar. The U.S. Food and Drug Administration recommends the use of broad-spectrum sunscreens with a sun protection factor of 15 or greater to protect against UV A and UV B radiation, and reduce the risk of skin cancer and early skin aging 1. It is essential to continue protecting the scar from sun exposure for at least 12-18 months after surgery, and ideally indefinitely.
Key Recommendations
- Use a broad-spectrum sunscreen with SPF 30 or higher
- Reapply sunscreen every 2 hours when outdoors
- Use physical barriers like clothing, hats, or silicone-based scar sheets for additional protection These measures can help prevent UV exposure from causing hyperpigmentation and breaking down collagen, which can widen the scar. By prioritizing sun protection, patients can maintain the cosmetic appearance of the revised scar and prevent deterioration of the surgical results. The importance of sun protection is further emphasized by the FDA's consumer education materials on the dangers of indoor tanning 1.
From the Research
Sun Protection After Scar Revision Surgery
- There is no direct evidence in the provided studies that specifically addresses sun protection after 6 months following scar revision surgery 2, 3, 4, 5, 6.
- However, the studies suggest that scar revision surgery and subsequent treatment can improve the appearance of scars, with some studies showing significant improvement in scar appearance up to 1 year after the procedure 3, 4, 5.
- The use of topical silicone gel sheeting has been shown to be effective in preventing hypertrophic scars and keloids, and improving the appearance of scars, with follow-up periods ranging from 6 months to 1 year 2, 4, 6.
- Other treatments, such as carbon dioxide ablative fractional laser and pulsed dye laser, have also been shown to be effective in improving scar appearance, with treatment commencing as early as 2 weeks after scar revision and continuing for several months 5.