hair products

I have been eyeing a hair care products for past few weeks now at online auction. One time, i was about to purchase but the cost of the product is a bit pricey for me. But yeah, they said, it was not just a shampoo and conditioner but its a hair care system that will make hair grows more faster and leaves strengthened and moisturized. Seems too good too be true for anyone who has a dry hair. Still, i'm a bit hesitant. I'm wondering if hair supplements is better though since they formulated with the same goal. I love hair supplement because they are cheap. Anyone help?