aaargh!! sunburn!!

Yesterday i went to Desa Waterpark...there are many kids having fun there with the splash water....me also...exciting n happily riding the tube...everything went fine until late afternoon i realized that all my body is turning red n get burnt!! oh no....then i quickly search for places utk berteduh...but it was late since my body already get exposed by the sunburn for a long time...whoaaa..poor me...i need to whiten my sensitive skin again...but it took a very long time to recover...huhuhu...so for those who have any solution...kindly share with me so that i can whiten my skin as fast as i could...huuhuh