Why have I never heard of this product til now? The only growth aids I know for certain that have worked for me are mega tek and biotin. I've stopped using mega tek (shedding and change of formula) and I recently stopped using biotin so I can focus on my skin care routine (biotin sometimes make me breakout). I tried a sulfur based growth aid (my own mix and Bee Mine on separate occasions) but I didn't use them long enough because I absolutely could not stand the smell. I take MSM off and on but because I've been taking it with biotin, I'm not sure if it aids in growth, but it does change my new growth texture slightly when I stay consistent on it, as well as makes it feel softer. Hopefully, Liquid Gold doesn't stink too much; I think I'm going to buy it.