Melasma is a chronic skin disorder that results in symmetrical, blotchy, brownish facial pigmentation. Sun exposure and sun damage—this is the most important avoidable risk factor.Pregnancy—in affected women, the pigment often fades a few months after delivery.Hormone treatments—oral contraceptive pills containing oestrogen and/or progesterone, hormone replacement, intrauterine devices and implants are a factor in about a quarter of affected women. Use broad-spectrum very high protection factor (SPF 50+) sunscreen applied to the whole face every day. It should be reapplied every 2 hours if outdoors during the summer months.consult dermatologist for more information.