my hairdresser recommended these and i love them [SEP] my hairdresser recommended my husband get and use one of these for his thinning hair to use to stimulate the scalp when washing his hair he also uses it with a rose water spray daily and within six months we have noticed a huge change in the thickness of his hair i use mine too when i shampoo although i already have incredibly thick hair and i too have noticed a difference it also gives a nice lift at the roots too for any ladies with flat hair that is why my hairdresser uses them on herself great little pack of two almost like a his n hers easy to use due to the grip and easy to pull apart and clean had ours a while now and still like new really great product and super price considering other places on the internet are selling these exact ones at a piece pick up a bargain from amazon