Frizzy roots on mature dreads! Help!
Help! Save My Dreads
Hey guys! As you can probably see, I'm new here, never used a forum, hope I posted in the right place 
I have my dreads for 2 years and a half now, and until a few weeks ago I thought they are already mature enough not to cause any problems anymore. The dread journey was very peaceful, unlike many people had, as far as I read on the internet. I had no problems with the frizz, not big ones anyway. But a few weeks ago my roots started to be very frizzy. I have loose hair, looks like it got out of control. I always maintain them at the shop were I got them, every 2 months. But now, after I have them maintained, the roots don't last even a week, they are back as they were. I have to mention that maybe 1-2 months ago I changed my shampoo from Neutrogena Residue Free, to Dollylocks. Could this be the problem? I was thinking to switch back to Neutrogena to see if my problem will be fixed but first I need some other dreadhead's advice. Please help me! Thank you so much!