Yes, FACELIFT is a Scrabble word!

Letter values in Scrabble US: F 4, A 1, C 3, E 1, L 1, I 1, F 4, T 1.

Is it a valid word?

FACELIFT is a valid word in the official Scrabble dictionary (US) and the UK Scrabble Dictionary, but not in Words with Friends (ENABLE).

plastic surgery to remove wrinkles and other signs of aging from your face; an incision is made near the hair line and skin is pulled back and excess tissue is excised
a renovation that improves the outward appearance (as of a building) but usually does not involve major changes

Also: face lift, face lifting, cosmetic surgery, nip and tuck.

Not playable in Scrabble US: RHYTIDECTOMY, RHYTIDOPLASTY.