My dog loves it, and my cats love it too, but my dog doesn’t like it when my cats are in there because my dog’s like, ‘Excuse ...

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 ...

Top review: "Alpecin Caffeine Natural Hair Shampoo is my go-to remedy against thinning hair. This German-made gem not only ...

Loaded with caffeine, biotin, zinc, and copper peptides, this shampoo works to stimulate the scalp, strengthen the hair, support a healthy hair life cycle, and protect your tresses against ...

This shampoo also contains several supporting ingredients to tackle hair density from different angles. One is caffeine, which Kopelman says stimulates hair follicles and prevents fallout.