Burn from hydroquinone - what treatment should help me heal my skin?

my concern on lower butt because it has discolouration but just a mild discolouration like other clinic always says it’s just normal for my south asian skin. But this particular clinic offered me an intimate rejuvenation treatment. They gave me hydroquinone cream and also I had 1 session of the laser. After laser the doctor said to still use the cream. Now my skin is burned! All over my vagina until the back of my butt. What treatment should I get to help me heal my skin? Pls help