With chemical peels, the useful question is depth. Ask about it the same way with every surgeon, and you can compare what two surgeons tell you.
Why depth is the question
Ask about depth first: which depth is proposed, and why.
Ask for the depth in plain words
Ask the surgeon to state the depth of the proposed peel in one sentence. Then ask what that depth is meant to change on your face.
How deep does each peel go?
A professional society lists the procedures its members perform on its procedures page. Use a list like that to pick the treatments you want explained, then ask the surgeon how deep each one goes.
Common questions about peels
A dermatology society's chemical peel FAQs are a place to read common questions about peels before you write your own.
Your skin and the depth plan
Ask the surgeon whether the depth plan changes for your skin, and ask what recovery looks like at that depth.
Peel depth and recovery steps, on paper
Have the surgeon write down the depth, along with the recovery steps for it. If the surgeon proposes several treatments at once, ask for them to be explained one at a time. A society blog post, everything you need to know about chemical peels, is good background to read first. Then ask your surgeon to explain the depth plan against it.