First, thanks for mentioning me. Second, I haven't done many protein treatments, but I hope I can help anyhow.
AO GPB- This one has milk protein. I'm not sure this is actually beneficial for porous and damaged hair. My understanding is that hydrolyzed protein is better for deep penetration/rebuilding. It's a bogus product, IMO. Does nothing to strengthen my hair and little to improve its other qualities. I don't get why it's such a rave.
Millcreek Biotin: I was using this as a daily rinse-out (I stopped because of the panthenol giving me frizz/OC issues). It has hydrolyzed keratin and collagen. The longest I've left it on was 20 minutes and it made my hair watery/slippery. It can definitely reduce breakage and perk your curls up, but it's not *enough* protein for my hair. But I still think it's a good product.
Cure Care - Too light to be a deep treatment but it makes a nice rinse out (kinda left me OC'd as a leave-in) It has hydrolyzed keratin. I always followed it with moisture, although most of the time I didn't need to because my hair usually felt very soft after using it. It flipped the script on me and started making my hair brittle and tangly/matted on the ends. I've previously described this as protein overload but I'm not so sure anymore. I know now (thanks to experimenting) that my hair reacts this way when it's gotten too much moisture.
Giovanni Nutrafix - If left on for the recommended time, my hair felt tangled, dry and like straw. I learned to leave it on for less time and it made my hair feel softer but definitely NOT strengthened. I eventually just started using it as a moisturizing leave-in and ditched it once I realized it was OC'ing. It has plant extracts.
Ion Effective Care - Hydrolyzed vegetable protein is in this one, which is supposedly good for helping hair to retain moisture. It does make my hair shiny but not strengthened at all. It's a moisturizing conditioner, IMO.
Komaza Care Protein Strengthener - I've tried this twice now. It stops breakage but only for about a day or two. It didn't help with improving my hair's curl pattern or shine/sheen either. The minute I applied some moisture, my hair went dull, coated and frizzy again. I think the aloe vera/behentrimonium is overpowering the protein.
Aphogee 2 step - My hair laughed at this. Had absolutely no effect.
Joico K-pak - Same as above.
Yeah, so... at the very least I hope I gave you one or two product suggestions, lol! I know I wasn't much help.
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