First time bleach amik 12%..rmbut lebat bra line amik 4 set if nk light blonde,utk ellakinaminsatu set dh cukop..Utk yg tknk trlalu light or second time bleach 9%,sapu semua kt rmbut tgu selepas 30min or lbh utk kaler yg uall nk.Satu botol peroxide satu pack bleach.Gaul rata biarkn kjp bru pakai