Checking in...
I JUST EMPTIED the gallon that I bought about 3 years ago. No, I haven't been using it as consistently as I would have liked to.
But...when I was using it daily (4-5 days a week) (as I am now for CO washes, leaving it for 30 minutes, then rinsing and following w/DDTA (or other smoothing conditioner), I never had a problem with excessive shedding or breakage. My hair seems to thrive with heavy protein treatments.
I used it as a relaxed head and now as a texturized head and I have no breakage or shedding and the growth is right at about 1/2" a month for me (when I usually average 1/4").
I've raved about it so much I'm hoarse (not horse!!). I still use it, still love it, keep it in the arsenal whether I'm using it frequently or not.
HTH
LaNecia
Ps. I just bought two new bottles today.