It's possible that your skin may stay red or pink for up to several months after laser skin resurfacing. You may also be extra sensitive to sunlight for up to a year. Make efforts to minimize sun exposure and use that sunscreen liberally, every day.
Some people who have laser resurfacing may see an immediate difference in the treated skin. That will continue to improve for up to a year. While the effects of laser resurfacing can last for many years, the normal aging process means that wrinkles and expression lines will reoccur. You may repeat laser resurfacing as necessary.