Are you trying to grow your hair long in a short time or something?
~! In any case, shampoo and conditioner can change the texture and all, but I haven't heard of any that would make your hair grow faster. I don't think any externally applied chemical can induce hair growth markedly ~ Favorable hormonal changes can encourage hair extension though, amongst other factors. My hair grows fast - a natural disposition, I suppose. Just maintain a proper diet, take your vitamins, drink gallons of water daily, and have green tea. They are surely beneficial for your hair. ( ﾟｰ^)