We asked the experts. That’s where caffeine shampoo comes in. We’re sure you’ve seen the adverts on TV (and likely written them off) but, despite being around for a long time, they’re ...

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.

The shampoo combines gradual color enhancement with the strengthening benefits of caffeine to leave your hair stronger and ...