I have bleached blonde hair which can start to look dry without the proper TLC. I got this to add as an 'after' blow dry spray. It definitely adds shine upon spraying it, but with brushing (or even no brushing) that quickly dissipated on my hair. I tried using it next on towel dried hair, but it left a strange, straw-like almost knotted texture on my hair. I've since just given up trying different ways to use it and tried it on my 5YO daughters hair as a detangle spray and it made her hair shiny and amazing. Just not for me I guess :)
I have wavy hair that tends towards frizzy. The creme is a nice, light product that helps to define my natural wave without becoming crunchy. I would love if it gave a little more hold, but even when the wave drops it doesn't feel full of product. I haven't used the product with heat, but as a styling product in towel-dried hair it is really good.
I have wavy/frizzy hair that tends to get oily on the day after a wash/condition (or immediately after sweating), but not with this magical serum. After a hard session at the gym, I simply rinse the sweat out and my hair is good for another day or two. I usually shampoo/condition every two days but i can stretch it out to every third or fourth when i use the concentrate. It has become one of the staple products in my beauty arsenal.