B for Men (made by TIGI) really understands what guys want. Clean Up Daily Shampoo will remove every trace of product build up and also smells great with menthol and lemon grass. It stimulates the scalp and promotes healthy scalp and hair growth which is especially good for thinning hair! You may need to get him using some of the B for Men styling range as it also has great performance and shampoos out without a trace.
I use this shampoo every day and I think it's fantastic! The peppermint gives you a real wake up call as it leaves your head tingling! I love it!!
Always choose a simple formula shampoo, which costs you less money. Remember, the basic purpose of a shampoo is to wash away the dirt and the oil. Therefore, use a milder shampoo, which is less expensive and more beneficial for your hair. Apply a good quality conditioner once you clean your hair with the shampoo, but do not over-condition your hair.