Therefore you should avoid it and stick with AHAs. Some people can't use AHAs for long periods, and most skin care people would probably suggest using one for half a year to a year, then using it half as often. Read the instructions carefully. Don't use them on your eyelids. Wait 15 minutes.
Soaps tend to be alkaline which neutralizes acids.
By waiting for your face's acid balance to return to normal, your AHA will work better. Let it work 15 minutes. Apply your foundation, sunscreen, moisturizers, etc. The rest is water and stuff used for dissolving the AHAs. These are done at concentrations higher than you can buy at the store, but be sure to find someone you trust to put one of these on your face.