Thanks for the feedback.
I use L'Oreal Sulphate free EverPure shampoo in the Rosemary/Juniper scent. I love this shampoo and it's only $8 (compare that with sulphate-free salon brands).
My most recent conditioner is Morroccon Oil moisturizing masque. Before that I just used Pantene.
Trevel - how many shampoos does yours last? How far apart do you space out your touch ups?