Vitamin C + BHA
Be a bit carefulBe a bit careful. Low-pH vitamin C with a BHA (salicylic acid) can be a lot of acid at once - expect possible stinging, not disaster.
The clean split: vitamin C in the morning, BHA at night. If your BHA lives in a cleanser, contact time is short and the pairing is gentler; a leave-on BHA plus vitamin C is the one to schedule.
Sensitive or rosacea-prone skin should split these and patch-test. Sturdier skin sometimes tolerates the layer - introduce slowly and let your face vote.
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