Ultimate Sunscreen Guide: UV Ray Skin Protection
Wear sunscreen to protect your skin from UV rays:
This cannot be emphasised enough. Wear SPF of approximately 30 everyday, regardless of the season and the weather, come rain or sun. In addition, wear a hat to protect your face and neck, and a pair of bug-eyed shades to protect the delicate skin around your eyes from the sun's UV rays. Try to stay away from the sun between 10 am and 4 pm, when the sunlight is at its harshest.
Explore a wide range of Kaya’s sunscreens and protect your skin from harmful UV rays. 
Avoid heat to prevent pigmentation:
In addition to avoiding the sun's UV rays, heat from other sources can cause pigmentation. The heat from your laptop on your thighs or burns from scalding water in the shower can cause Melasma. Thermal radiation affects the melanin-producing cells, causing pigmentation of the skin. 
Acne and injury causes post inflammatory hyperpigmentation:
Injuries like burns or cuts result in inflammation that can remain even after the wound heals. Acne, pimples and rashes also cause inflammation, resulting in discolouration called PIH. Read more about Post Inflamatory hyperpigmentation treatment and its causes 
Watch your medication:
Certain medication like birth control pills, antimalarials and chemotherapy drugs cause hyperpigmentation. Hormone Replacement Therapy is also known to cause Melasma. If you begin to notice pigmentation after beginning certain drugs, it is best to consult with your doctor immediately. 
Emotional stress affects melanin production:
Extreme emotional stress can affect the production of melanin, thereby causing pigmentation of the skin. It is more important now than ever before to practice yoga or meditation or find other ways to cope with the stresses of modern living. 
Try home remedies for pigmentation:
Massaging cocoa butter onto stretched skin during pregnancy can treat hyperpigmentation within a few weeks. Vitamin C serum is a rich source of antioxidants and helps fight skin pigmentation. An application of lime juice and honey on the skin for ten minutes daily can play a strong role in reducing pigmentation and providing deep-moisturizing. A facemask of mashed avocado or papaya can help reduce pigmentation and hydrate your skin, leaving it fresh and plump. Aloe vera gel can help treat pigmented skin. It clears dark spots and blemishes, and as older skin cells slough off, it makes room for clearer, fresh-looking skin. 
Each of these home remedies need to be applied and left on for not more than twenty minutes, after which the skin stops absorbing, making it ineffective. Since each skin type is different, try a few of the options mentioned above and see which one shows best results on your skin.
Check this infographic for more; 
know About Melasma treatment and other treatment for pigmentation at kaya that you can sign up for.
