I have not tried either of those, however, I wrote down a concoction that someone posted sometime ago for fast hairgrowth, but I've yet to try it. It is as follows:
1 Tsp of cayenne pepper and 1/2 cup of olive oil. Mix the 2 together, apply to your scalp, leave on for 30 mins., shampoo and condition. Once again, its supposed to really stimulate the scalp thus producing faster growth.