Does phototherapy darken skin permanently?

Question

Accepted Answer

No, phototherapy does not darken your skin forever. The UV light used in this treatment pushes your skin to make more melanin, so your skin looks tanned or darker for a while. This darkening fades away on its own within a few weeks or months once you stop the sessions. Your doctor watches your skin closely during treatment to prevent overexposure. If the darkening doesn't fade, talk to your dermatologist.