Will gua sha permanently lift my face?

I would not promise permanent lifting or collagen rebuilding from gua sha. If you enjoy the ritual, gentle use can be fine, but bruising or aggressive pressure is not a sign of better lifting.

Massage can change how the face looks temporarily, not permanently lift it

If you enjoy it, do not use force or treat bruising as proof it is working. For a specific concern about sagging, discuss realistic options with a qualified professional rather than relying on a massage claim.