I use pure Silk Amino Acids that I got from Lotioncrafter or Liquid Silk that I got from TheSage.com. Very nice results with them. I also add oil and Neutral Protein Filler to my relaxers with excellent results. My hair is much better condition post relaxer since I have been doing this.
I use to use CHI Silk Infusion or Cantu Silk Shine on my length while relaxing. They work excellent, as well.
I got it from Walgreens, it's made by Special Effects. I can't post a link from my phone, but I'm sure you could look it up on the Walgreens website It's a clear bottle with purple lettering and a purple top.
The description says: Silk Drops smoothing serum smoothes, conditions and shines. Silk smooth polishing formula instantly makes hair silky, smooth and shiny. Conditions and detangles dry, damaged hair, prevents frizz, and helps prevent breakage.
Can I say that I this stuff? It does everything it claims. I put it on after my leave in and although my leave in gives my hair SUPER softness and slip, when I put on the Silk Drops my hair feels unbelievable. I'll never, ever be without it.