I battled with dark spot for a while especially d ones dat appears after u burst a pimple...made findings and discovered some natural and home made method of curing these spot.
1-lemon juice:rub on a cotton wool and apply on affected spot then allow to dry after some time u wash it off.. Do this continuously.
-honey scrub: you can mix honey with sugar and scrub on affected area for 2 mins... The wash off d face u'll notice the smoothness.
Do these for 2 weeks and u'll notice a bright sparkling skin...
I did these and it's worked for me.