When Callista Kinney, 24, wants a budget-friendy touch-up, she heads to NYC's Beauty Bar for its low-cost combo of manicures and drinks for between $10-$12 a shot. Olga Ginzburg for the N.Y. Post

It’s glow time in Chinatown. Under a slant of sunlight, Viveca Chow reclines, her hair bundled in a cotton towel — as esthetician Diana Wu works a smooth, curved tool over her pronounced cheekbones.

This isn’t some cucumber-water-and-pan-flute facial. There are no plush robes or heated beds here at Diana Beauty Spa , tucked between noodle shops on crowded Mott Street — just the rhythmic pressure of Wu’s capable hands and the scent of herbal oil in the air.

But for Chow, 30, a Queens-based content creator with glowing skin and a budget, Wu’s no-nonsense Bojin facial treatments, where a tradit

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