My votes are:
Strong protein: Nexxus Emergencee-- After shampooing, I wring out excess water from my hair and apply about a palm full of emergencee all over my hair, focusing on the ends. Then I put on a plastic cap, and a hair net and sit under my Pibbs for about 20 min or until my hair becomes hard...(yes, hard
) . Then I rinse it out and condition as usual. I use this only once in about 2-3 months, usually right after a fresh relaxer to strengthen my vulnerable strands. It works really well and keeps my hair strong for a while.
Light protein: Phyto Organics Enphuse or Aubrey Organics GPB. Both are light enough for weekly use if necessary, but I use them only when I really feel like I need an extra boost of protein but not as extreme as Emergencee. I use them as a prepoo with some oil, then rinse them out, shampoo and condition as usual. Good for maintenance of protein balance, and I usually alternate them with moisturizing conditioners week to week.