What's the difference between using aha once a week or a few times a week? [Routine help]

Beauty Tips For Body Care
Or is it just a matter of preference? I put a lot on my skin now and would rather be able to give it a break. It's confusing that there is aha 8% which can be used a few times a week but the 10% is only once a week? Will the results still be the same?
Girls Blog 2015
Submitted by RainyLeaves