...but since there are numerous conditions that can mimick melasma, I suggest you be evaluated by your local dermatologist.
Melasma, a genetic and hormone-related condition is worsened by sun exposure. I would advise a daily moisturizer with SPF 30 or greater. Another great alternative containing a tinted cover-up make-up and zinc oxide is a product called Colore Science Sunforgettables, available online.
Besides strict sun protection, other interventions that can help:
1. hydroquinone ("bleaching" creams)
2. light chemical peels such as Jessners, sal acid and 10% TCA
3. Intense Pulsed Light ("photofacial")
4. Fraxel re:fine or re:store lasers.
The caveat is that if your melasma is successfully treated with any or a combination of these treatments, it tends to come right back if you do not protect yourself from the sun.
Good luck.
