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Can 35% TCA help with shallow facial scarring?

Mild scars 1-2 small boxcars, 6-8 shallow rolling scars from picking (have OCD...but have not picked in 5 years) and a 5mm round scar from a lesion removal by curettage. I'm seeing an experienced PS and I'm happy with the subcision and filler work he's done so far. He's reco'ing a 35% TCA though he has all tools (Co2, erbium, etc). Can TCA help with the scars? I read doc comments like 'TCA does nothing for scars' or 'you can't sculpt scars with TCA'. He says that's not true. I'm confused!

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