Phyto phytodensium serum

I've used this product once, maybe twice. It's just never been incorporated into my hair routine. It has great reviews and is from a great product line.

Retails for $32, asking $15 which includes shipping.

Sephora website description:

With just a few drops of this powerful, lightweight serum, hair is fortified and invigorated. Pro-vitamins B5 and B6, combined with a tyrosine derivative, prevent future damage and boost the level of melanin in each hair shaft, delaying gray.

Research results:
In clinical efficacy testing over four weeks with volunteers using Phytodensium Shampoo and Serum:
- 95% of participants noticed fuller, stronger, softer, shinier hair.