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26th September 2016
03:48pm BST

Sun exposure and hormonal changes (usually associated with pregnancy) are traditionally the main causes of Melasma, but new research indicates "that all light is suspect, from light bulbs...to the screen on your phone and computer."
“In the last decade we have realised that sun and the birth control pill are not the only melasma culprits,” dermatologist Mona Gohara told Refinery29. “Research has shown that the visible light from computers, cell phones, and light bulbs can be sources, as well. That's why sometimes patients don't get better with just standard sunscreen — the other sources continue to tax the skin."However, there are things you can do to protect your skin. Dr Gohara says iron oxide is the best defence against light damage - and that if you're really concerned, then look out for sunscreens and moisturisers that contain the ingredient.
