US$ 23.35
numbuzin glutathione c No.5 Vitamin Boosting Essential Toner 200ml and niacinamide No.5+ Glutathione Vitamin Dark Spot
Description
Too little kojic acid won't give you results, but too much can cause irritation

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Directions to use Glutathione: Take one serving after food or as directed by the physician

Thats an easy one to answer
