Is Sun Good for Scars?
No, sun exposure is generally harmful to scars. Sun's ultraviolet (UV) rays can worsen scar appearance and discoloration. This is especially true for new scars within the first year.
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Increased Discoloration: UV rays can lead to hyperpigmentation (darkening) or hypopigmentation (lightening) of the scar tissue, making it more noticeable and potentially causing uneven skin tone. This discoloration can persist for years. [La Roche-Posay, Dr. Erwin Bulan, La Roche Posay Africa]
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Increased Sensitivity: New scars are more sensitive to the sun and prone to burning, which can further damage and impair healing. [Hull University Teaching Hospitals NHS Trust]
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Inflammation: Sun exposure can cause inflammation in the scar tissue, hindering the healing process and possibly leading to raised or thickened scars. [commonly held belief among physicians]
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Long-Term Damage: Prolonged sun exposure increases the risk of long-term damage to the scar, including changes in texture and appearance. [La Roche-Posay, La Roche Posay Africa]
Protecting Scars from the Sun
To minimize sun damage to scars:
- Use Sunscreen: Apply a broad-spectrum sunscreen with an SPF of 30 or higher, and reapply every two hours, especially during peak sun hours. [La Roche-Posay, Dr. Erwin Bulan, La Roche Posay Africa]
- Cover Up: Wear protective clothing, such as long sleeves, hats, and sunglasses, to shield scars from direct sunlight. [OTS Services, NHS]
- Seek Shade: Limit exposure to direct sunlight, especially during the hottest parts of the day. [Hull University Teaching Hospitals NHS Trust]
