My fine, blonde, color treated highlighted hair has been breaking a lot lately and I'm not sure if it's over moisturized or if I've been possibly overdosing on protein and not realizing it.

I have used in the past few months:

Clairol Shimmer Lights Shampoo & Conditioner (2-3x week)
Nexus Aloe Rid (1x week)
Nexus Emergencee Reconstructor (1x week)
Nexus Humectress (2-3x week)
Matrix Shade Memory for Blondes (1x week)
L'Oreal Pro Color Vive for highlighted hair
Feria deep conditioner
Framesi Options Hydrate
Biolage Color Care shampoo/conditioner
Deepshine lustrizer
Biosilk

What ingredients can be causing the breakage?