Love, love, LOVE this conditioner! Finally, my HG conditioner- and I've tried a lot!
I fist tried this years ago when travelling to the US. I stopped by Sephora to get myself a travel shampoo and conditioner and got the PHD kit. After a week of use, my hair looked amazing. like UH-MAY-ZING. Nothing has made my hair so shiny! Ridiculously shiny. Smooth, healthy, gorgeous. I never knew my hair was capable of looking this shiny.
I have very fine hair which is prone to oiliness. My hair is also dyed with henna. I only use a tiny amount of this, and just on the ends. Makes my hair smooth as silk. Easy to brush after the shower. Stays fresh for a while afterwards.
I admit, if your hair is very oily, then this may be too rich for you. I know that, before doing a course of accutane, this was bordering on too rich for me- I had to wash my hair every day as it was so greasy. During and now on maintenance accutane- this is perfect. The name suits it to the ground- every day is perfect hair day with this stuff.
Smell is an innocuous, inoffensive fresh smell.
As for all the BS scientific claims... well, who know if there's anything to it. Unlikely. But, this stuff certainly makes my hair look amazing.
Remember, it does take a while for it 'take effect' so as to speak. At least a few weeks of continuous use is needed before you start to see how awesome this stuff is.
I recommend buying the set with the 3 items. Can be bought pretty cheap on ebay, amazon etc. I buy the 1litre bottle on amazon and, given how little is needed, it's not too expensive. Totally worth it.
Only gripe is the bottle. The press-to-open thing is often stiff and gets stuck. Also, when it's almost empty and I leave it upside down to get it out, it leaks. So, I cant turn it upside down, but instead need to spend a while shaking it to get the last bits out. Which is a pain. Also, I wish the litre bottles came with a pump. I now just transfer it into a different bottle. Not a deal breaker, but a hassle none the less.
Still- highly recommended. Every one should try this. The kit would make a great gift, too!