There really aren’t any coupons for Paul Mitchell. The reason there are no coupon codes is because he doesn’t need to discount his products because he has such a great reputation. So unfortunately if you want to buy Paul Mitchell products, you’ll just have to pay full price but it’s worth it because his products are so great.
Interesting articles about Paul Mitchell
https://en.wikipedia.org/wiki/John_Paul_Mitchell_Systems
http://travel.cnn.com/explorations/escape/8-top-products-post-flight-rejuvenation-647773/
http://www.huffingtonpost.com/paige-donner/greening-hollywood-organi_b_129933.html