What is the best hair product you've ever owned?

I went through a ...phase where I bleached and dyed my hair crazy colors and my hair was totally perminantly damaged. I was so close to just shaving it all off! Anyway I got it out of the 'really really bad' part where it took 8 hours to air dry, if I went to bed with wet hair then I'd wake up with a FRO! I'm not even joking, it had the same texture, kinks, and hle! I dyed it back to my natural color and was just done, its been at least a year since I dyed it last. I went to the hair dresser the other day to get a trim and she said my ends were still really dry, weak, and mushy! I guess I just didnt notice now bad it was because it was so GOOD compared to how it was before! She reccomended the Redkin AntiSnap leave in conditioner/heat protectant. I love it. I've been using it for a week and my boyfriend already has commented on how beautious my hair looks, feels, and smells :D Thats always a sign that somethings working... haha. I was just wondering what is YOUR favorite hair product?