I've had botox for crows feet and upper lip lines three times now. I'm 37 and didn't like the amount of wrinkles I already had. I love it! It works wonders on the crows feet.
You have to go to a reputable doctor that has a lot of experience. There's no down time, and results last about 4-5 months, but eventually will last longer and will be able to space out tx's.