Clients often come to us with photos that are unrealistic for the effort they are willing to put into their hair. Most photos you see on instagram are blow dried, have product used (sometimes 5 different ones), are heavily Photoshoped, or not even close o the same hair texture as what they have. In consultation it is your barbers job to find what is going to work for you. A blow dryer used properly can change your relationship with your hair. a little bit of product should go a long way. Typically I would say that any product you buy should last you 3 months almost. If it does not last a month you are probably using way too much. This is a great video to break it down for you.