im not an expert at this la! but i recommend that you must use a whitening cleanser for sure
cuz a cleanser is something you'd use everyday no matter what - that way the effect is more long lasting and permanent..
but for other skincare products you're less likely to use it everyday ar ma~
siu lek i just use ..whatever ga ja. i don't really stick with one brand. i've used l'oreal, kose, shishedo, biore, kanebo... nothing too expensive either~ all are under $15cad