Aha before or after toner ?

i use exfoliating toner before my hidrating toner

Before. But if your skin is sensitive somehow you can use it after once your toner is dry and well absorbed.

it depends on what form your Aha comes in if your toners/serums are thicker than the AHA then the AHA should go on 1st and verse versa

I also use bha right after cleansing and before toners and serums. It's better to apply it on dry skin.

for me, it depends on what the exfoliating product is. for example, if it's an exfoliating toner, I would use it first and then my serums/treatments. if it IS a serum/treatment, I would use my toner, THEN the exfoliant. (if it's a serum/treatment, I will use that one first before my other ones.) I follow the "thinnest to thickest" rule in general with my skincare so that's what I would do! ☺️