The Zenagen Revolve Hair Loss Shampoo is $60 at Amazon, where shoppers say the formula quickly thickens thin hair, minimizes shedding, and supports new hair growth.

Another fan saw “significant” hair thickening.

Though hair that’s thinning, shedding, or breaking can prove tricky to treat, the solution may be as simple as swapping out your shampoo. Case in point: Thousands of shoppers have reported significant improvement in hair fullness and length since incorporating the aptly named Thickening and Hair Loss Shampoo from salon brand Zenagen into their routines. 

Zenagen Revolve Thickening and Hair Loss Shampoo Treatment 

$60 at Amazon

The Zenagen Revolve Thickening Shampoo Treatment is an in-shower wash that strengthens frail strands and promotes new hair growth over time. Made for all hair types and textures, the formula is entirely drug-free—and, instead, relies on powerful, scientifically-proven plant extracts to maintain optimal hair health, stymie shedding, and deliver a fuller, thicker mane. 

Specifically, the formula contains protein-rich soy extract, which fortifies weak, breakage-prone strands—in turn, preventing excessive shedding and allowing hair to reach new lengths. Green tea, which is rich in antioxidants and has been studied for its growth-promoting properties, is also present. Finally, Zenagen’s shampoo features saw palmetto extract—a plant-derived ingredient that may block DHT (a hormone that can exacerbate certain types of hair loss). 

Using Zenagen Revolve’s hair growth shampoo is simple, and requires no additional effort beyond washing with a traditional shampoo. Per the brand, using the formula three to four times per week yields optimal results.

Amazon reviewers are impressed, as evidenced by their glowing reviews. One shopper, who discovered the formula through their hair stylist, has seen “significant hair growth” and “thickening” within a few months of using the product. Similarly, another fan—who had struggled with “terrible thinning,” swore the shampoo made “a huge difference” in only two weeks. A final fan said their “hair is thicker than it has been for years” thanks to Zenagen’s shampoo, “and has grown at least four inches” in only three months. 

For fuller, thicker, stronger hair, shop the Zenagen Revolve Thickening Shampoo Treatment at Amazon—and consider similar options, below. 

Nutrafol Cleanse and Hydrate Shampoo

$44 at Amazon

Mielle Organics Rosemary Mint Strengthening Shampoo

$10 at Amazon

Luseta B-Complex Shampoo and Conditioner Set

$35 $26 at Amazon