Say this
"Keep some length on top — an 8 or longer guard so the curl still shows — and tidy the sides with a low taper."

Men's haircut preview
Yes — you can buzz curly hair, and it's one of the lowest-maintenance ways to wear it. The guard length decides everything: keep some length and you keep visible curl and texture; go very short and it reads almost like a flat cut. Here's how to pick the guard, and how to see it on your hair first.
Before
AfterThe version that works
Where it goes wrong
What to ask your barber
"Keep some length on top — an 8 or longer guard so the curl still shows — and tidy the sides with a low taper."
A preview is a direction for the barber, not a guarantee — but it beats pointing at a stranger with different hair.
A bad fade is £25 and three weeks growing it out. A preview is about a quid.
See a buzz cut on my faceRead first
Same cut, other faces & hair
Same curly hair, other cuts
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