Why Do Surgical Scars Darken?

A darkened surgical scar is relatively common and can result from various factors, including:

1. Hyperpigmentation: This occurs when excess melanin, the pigment that gives skin its color, accumulates in the area of the scar. It's more common in individuals with darker skin tones.

2. Post-Inflammatory Hyperpigmentation (PIH): This type of discoloration happens when the skin darkens after inflammation or injury, which can occur after surgery.

3. Sun Exposure: Exposure to the sun can darken scars. The skin around the scar may tan differently than the scar itself, leading to a more noticeable contrast.

4. Scar Maturation: Scars can change color as they heal and mature. Initially, scars may be red or pink and then darken over time before eventually lightening.

Managing and Treating Dark Surgical Scars

1. Sun Protection: Protect the scar from sun exposure by covering it with clothing or using sunscreen with a high SPF. This helps prevent further darkening.

2. Topical Treatments: Over-the-counter creams containing ingredients like hydroquinone, glycolic acid, or vitamin C can help lighten hyperpigmented areas. Always follow the instructions and consider consulting a dermatologist before using these products.

3. Silicone Gel or Sheets: These can help flatten and reduce the appearance of scars, and some studies suggest they may also help with discoloration.

4. Patience and Time: Scars can take months to years to fully mature and fade. Consistent care and time often improve their appearance.

Author

Dr. Catherine Logan, MD, MBA Catherine Logan, MD, MBA, MSPT, is a sports medicine orthopaedic surgeon specializing in complex knee and shoulder surgery at Colorado Sports Medicine and Orthopaedics (COSMO) in Denver, Colorado. As a former physical therapist & trainer, Dr. Logan provides a distinct expertise in sports injury, prevention, and surgical management.