I just bought Kojic acid soap. Should I double cleanse with my cleanser or just use it once in the morning?

[aymangue]

Beacuse my dermatologist recommended using kojic acid soap at night.

 

[AmazighMaxxer]

once a day is good bro just leave it on for like 3 mins before rubbing it off, unless you get irritation like some people do then use it every other day