Hi! Well I can tell you for sure that the ENTIRE line does not exclude protein. The 5th ingredient in the B'Leave-In, for example, is Hydrolyzed Wheat Protein. (My hair loves protein, and out of the entire Deva line, this product works exceptionally well for me.)

However, SOME of their products do not contain protein. I also have the One Condition, Angell, and Set It Free, and I don't see any proteins in these items, although I'm not absolutely sure.

So, with Deva as with all other lines, unfortunately I think you are going to have to take it one label at a time. I feel you on the frustration of this!
Medium/coarse, low porosity, dense, mix of 3s
CG (again) since Nov. 2012

Cleanse: SM Moisture Retention, Elucence MBC, KC Come Clean
Condish: Giovanni DL, Cure Care, Ion Treatment, GVP Balm, AOHR
Stylers: KCCC, SM Souffle, AOMM, SS CEJ, JCRR, JCCC

Trying out steaming!