Best remedy for sunburn skin discoloration?

No real tx: As injured skin heals, the body creates inflammation to do so which means fresh blood goes to the area and with it, many kinds of healing factors and cells. One type is called melanocytes which carry our skin pigment melanin. A healing occurs, these cells get deposited int he area and give it the brownish coloration you see. Over time, there will be some fading as the injury matures.

Sunblock/BBL therapy: Sun burn discoloration can be a pink or brown color and if you use sunblock over a few weeks to months, it will settle. If not settling then there were likely other problems like infection that may have prolonged the inflammation. Rarely, broad based light (bbl) treatments may be needed to lighten the area.