“It’s important that you give it a few months to work though as ... cooling menthol and caffeine to help increase blood circulation. Not only does this shampoo have Oribe’s signature ...

Coming in at $12, this shampoo does an amazing job at such an affordable ... allowing the effects of caffeine to work wonders ...

but you can do a little detective work. Fragrance and the commonly used preservative phenoxyethanol can only be used at a maximum of one percent. So, if caffeine is appearing on the list after ...

At the center of this is Alpecin, a German-engineered men's shampoo. Beyond its claimed hair benefits, the caffeine in Alpecin has caught attention as a possible performance enhancer for athletes.