Texturizers

I am really interested in coverting my relaxed hair into a texturizer by putting it on the new growth. For some reason, my ends can get curly, but not all of my hair. It can just hold a faint wave. I want to be able to grow into a new texture, where I can where all of my hair curly and wavy. Could anyone tell me of any good brand of texturizers and their experiences with it??? Can hair be worn straight with a texturizer, and can it be worn in wet sets too?? Are texturizers good for just short hair only, or does it work well with medium and long hair lengths also?

Thanks,
Karonica