I am using merlot night cream fro anti- wrinkle. If I stop using the cream will my wrinkles come back? ?

Yes. All anti wrinkle creams nee to be used continuously. They rely on plumping up the skin so it fills out the wrinkles. No cream, no pumping - wrinkles. Even the superduper ones that have some effect on the underlying structure of the skin still rely a lot on plumping up.