Kojic acid + AHA
Be a bit carefulBe a bit careful. Kojic acid and AHAs both target pigment, but using them together can raise irritation and sun-sensitivity - two brighteners pushing the same pathway at once.
In a single well-formulated product, the combination is usually fine - the formulator balanced the strengths. With two separate strong products, alternate use instead.
Either way, this pairing makes SPF non-negotiable: both ingredients leave skin more sun-sensitive, and sun is the thing re-darkening the pigment you're treating.
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