AHA BHA

Hi guys! I’ve recently purchase the cosrx aha bha toner because I need an exfoliate. I have never had an exfoliant before, so I’ve got some questions: After my cosrx purchase, I’ve read that this is technically not so much of an exfoliant. What do u guys think? It contains an AHA ingridient, but does that really makes it an exfoliant? I’m thinking of purchasing another product. Should I go with paula’s choice of krave beauty’s kale yaha? Or do u guys have any other recommendations? I’m hoping to get a product that has both AHa and BHA properties, or it is okay to use a BHA product and then layer it with an AHA product?