The 14 Best Hair-Thickening Shampoos for Men

Many hair-thickening shampoos provide great results right away, but the volume you get doesn’t last forever. This shampoo, on the other hand, contains saw palmetto, a natural ingredient that has been shown to help block DHT, the hormone that contributes to male-pattern hair loss. That means not only does this offer immediate thickening effects like any good thickening shampoo, but it can also help curb further hair loss for better long-term results. Keep in mind that you need to let it sit on your scalp for a few minutes before rinsing to allow the ingredients to penetrate.

This thickening shampoo works in two ways to add volume to fine and thinning hair. First, it cleanses and balances the scalp, which helps to remove buildup and prime the way for optimal hair growth. Second, it contains phyto-extracts, as well as other hair-healthy ingredients like biotin, which help to plump and hydrate hair strands to create an immediate (but superficial) thickening effect.

A dermatologist and cofounder of Root Hair Institute, Natalie Kash, M.D., recommends this shampoo to her patients because it contains ingredients like hyaluronic acid, peptides, and ceramides that can “create a thickening effect,” while also cleansing the hair effectively yet gently. Plus, it gives hair a shiny, healthy appearance.

Luxury shampoos hit different, and even though this one is also functional, what really stands out is the experience. The fragrance is elevated and luxurious, like a high-end spa or even a really good cologne, and the lather is rich. But it’s not just surface level. In the formula, you’ll find ingredients that help combat the first signs of hair loss as well as plump up hair to make it appear thicker and fuller.

Hardik Doshi, M.D., lead surgeon at Ample Hair Restoration Clinic in New York City, loves this inexpensive option for hair thickening because it has biotin and collagen in the formula, two ingredients that are “well-known for promoting hair volume and overall health.” There’s also wheat protein, which he says can help strengthen strands and reduce breakage, making thinner hair more resilient.

The Australian botanicals and essential oils in this formula, like cuaçu butter and neem seed oil, fortify and strengthen your hair, while mango butter, hemp seed, and marula oil help to smooth and repair damage, especially from dying or bleaching. On top of all that, “it really does help volumize hair,” says John Arsenault, a hairstylist and cofounder of Mott NYC. And on top of all that, the formula has UV protection.

This multifunctional shampoo can not only help make hair look thicker and fuller but actually help curb hair loss as well. It does this through several different pathways. First, it contains a mix of botanical ingredients and vitamins that help to volumize hair and nourish the scalp, promoting an overall healthier environment for hair to flourish. It also helps to block DHT, which is linked to male-pattern hair loss, and can help curb shedding and thinning for fuller locks in the long run.

This super-lightweight, residue-free formula is powered by amaranth peptides to help plump up fine and thin hair and phyantriol to help protect your strands from potential damage, especially from things like hot tools. There’s also an amino acid complex that gently cleanses hair.

This salon-favorite shampoo is a hit with Dr. Doshi because the protein-packed formula “strengthens and adds fullness” to your hair. It also uses gentle cleansing agents that won’t dry out your hair or scalp and vitamin B5 to nourish strands. The overall effect is more voluminous hair that’s lifted from the roots and looks clean and healthy, not weighed down by residue.

The fresh kick of eucalyptus and mint in this shampoo’s scent instantly transforms your shower into a spa—and who doesn’t want that? The deep-cleansing formula contains rice protein and vitamin E, which help to strengthen hair from the inside while plumping up strands to help them appear fuller.

Dealing with thinning hair can be tricky because everyone has a unique scalp and hair, so finding a product that works may take some (frustrating) trial and error. That’s where a custom product like this comes in. A quick survey takes into account things like your hair characteristics, your lifestyle, and environmental factors like water and air quality to develop a formula customized just for you. You can even give the company feedback once you try it so the formula can be tweaked until it’s absolutely perfect.

This shampoo is packed with a ton of natural ingredients, all of which work together to give your hair and scalp what they need to prosper. There are DHT blockers like nettle extracts and saw palmetto, which work to potentially curb hair loss and shedding, as well as damage-reversing argan oil and tea tree oil, black cumin seed oil, and clary sage, which help to strengthen hair.

Keratin is an essential protein for hair production, and this shampoo has loads of it. It helps repair damage and nourish both your scalp and your hair, and it can strengthen hair and make it more resilient against future damage. That would make this shampoo great on its own, but it also contains peptides, hyaluronic acid, red algae extract, and more, all of which help to create the appearance of thicker hair.

Yes, this lightweight shampoo deep-cleanses your scalp and hair without leaving them dry. (In fact, it leaves them feeling incredibly hydrated.) But what’s especially cool about it is that it contains prebiotics that help balance your scalp’s microbiome, promoting a better environment for your hair to grow—and that means healthier hair in the long run. And while it’s doing all that, it also makes your hair look fuller.