I have fine , bleached hair and my favorite is Purology - purple line. I also recommend using a good blowdryer - I use T3. Switching to both made a huge difference in my hair - I almost have no split ends . Now I get my hair cut every 10 weeks vs 5, even though I get my hair colored every 5 weeks.
Products I tried : BB, Kerastase, Fekkai, Matrix, Biolage, all over the counter products. All of them were too havy for my hair and Purology seems to give my hair just enough moisture.