My hairstylist recommended this line to me. Specifically this serum because he said it nourishes your hair from the inside out. Well, I don't think that is true at all, specially since I finally cut 2-3 inches off my hair and it's finally really healthy. This serum smells very good, a little goes a long way and I really like the shine it gives. Still, not spectacular, and i'm bothered that the price is 40 for 1 ounce bottle. Probably won't repurchase. The whole green line is very good though.