Health A-Z

Medical Content Created by the Faculty of the Harvard Medical School



The best way to prevent melasma is to limit skin exposure to the sun. If you go out in the sun, take these preventive measures:

  • Wear a hat with a brim to shade and protect your face.

  • Apply sun block (such as zinc oxide or titanium dioxide) to vulnerable areas.

  • Use sunscreen that protects against both ultraviolet A and ultraviolet B radiation. The sunscreen should have a sun protection factor (SPF) of at least 30.

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From Health A-Z, Harvard Health Publications. Copyright 2007 by the President and Fellows of Harvard College. All rights reserved. Written permission is required to reproduce, in any manner, in whole or in part, the material contained herein. To make a reprint request, contact Harvard Health Publications. Used with permission of StayWell.

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