I have heard eating foods with gelatin in them help. I have also heard to take vitamin e supplements. I'm sure you aren't going to get a new head of hair in 3 weeks but it may help. Try leaving your conditioner in for a day and don't use heat products. Salon quality shampoos and conditioners are the way to go. Regular store bought products are equivelent to hand soap. Good luck and maybe try going to a hair dresser for a night look for your date.