I have very dry, colored, porous, curly hair that I smooth out to style, I dont know what is in this stuff that makes my hair look amazing, but it does every time I use it. I have tried almost every high priced spray/conditioner/detangler ever made, and this is by far the best! Just leaves it shiny, soft and FULL. I hope they dont discontinue, seriously love it. If you have dry thicker hair, its a must buy. Im not sure how it would do on thin, less dry hair, but on my thin crown/hairline area its really good too.I would maybe just use less if your hair isn't super dry like mine. As far as growth, I do think I see more fullness too, or maybe the great condition it leaves my hair in makes it appear so, either way. I will take it!