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Sustainable, convenient, and most importantly, effective.

A collage of person before and after using a shampoo bar on their hair; and hands lathering a shampoo bar with water

Byrdie / David Hattan

Liquidshampooshave historically reigned supreme on wash dayuntil recently.

Solidshampoo barsare gaining popularity at a rapid clip.

They combine performance and convenience with sustainable formulation and packaging.

Ethique Clarifying Shampoo Bar for Oily Scalp and Hair: St Clements

PHOTO: Amazon

Theyre typically gentler on your hair than traditional shampoosand many are hydrating, too.

Plus, the compact and spill-proof bars are great for travel.

To narrow down the best options, wetested29 shampoo bars for every hair jot down.

Site Loop: Person’s hair before and after using Ethique Clarifying Shampoo Bar

Ultimately, these eight raised the (shampoo) bar.

Our tester said it offered a deep clean, removing excess oil and product buildup.

Saleam, tester with coily hair:My hair felt nourished after using the bar.

J.R. Liggetts Moisturizing Formula Shampoo Bar

PHOTO: Amazon

It worked pretty well with my hair jot down.

It has a faint citrus scent.

The smell is light and not at all overpowering.

Video and photos of person showing difference after using J.R. Liggett’s All Natural Shampoo Bar for cleaning ability.

We were impressed by how sturdy and solid this one was as well as how long it lasted.

It also cleanses extremely well, removing excess buildup from the hair and scalp.

It lathers nicely but it’s a bit tricky to distribute the lather evenly.

Good Juju Dry / Curly Hair Shampoo Bar

PHOTO: Good Juju

It is, however, very easy to rinse out completely cleanly with no residue left behind.

Keyaira, tester with curly hair:My favorite thing was that it rinsed totally clean.

There are a ton of shampoos that require aggressive rinsing but this slipped right out of my curls.

Site Loop: Person’s hair before and after using Good Juju Dry Curly Hair Shampoo Bar

It lathered nicely and rinsed out well, with no residue left behind.

We awarded bonus points to the formula for being color-safe.

It also has an earthy, slightly musky scent thats absolutely delightful.

Grove.co Notice Hair Co. Stimulator Shampoo Bar

PHOTO: Grove.co

We just wish the size of the bar itself was a bit bigger.

And while the bar is a bit smaller, it lasted quite a while.

Toral, tester with straight hair:My scalp felt very clean after using this shampoo bar.

Site Loop: Person’s hair before and after using Notice Hair Co.: The Stimulator

It removed excess buildup and oiliness.

And, since using the shampoo bar, I’ve noticed my scalp feels less oily.

We could feel it adding moisture with every use; credit the namesake ingredient,castor oiland hydratingglycerin.

Kitsch Castor Oil Nourishing Shampoo Bar

PHOTO: Kitsch

It lathered up well both in the hands and when rubbed directly onto the hair.

No stripping away oils!

We found the floral scent so pleasant, even if it can be a bit on the stronger side.

Hand holding a foaming Kitsch Castor Oil Nourishing Shampoo Bar

PHOTO: Byrdie / Sophia Noulas

Fragrance aside, this bar works extremely well.

It lathered up quickly; it only took slightly more time than traditional, liquidshampoo.

The formula left hair feeling super soft and totally clean.

Hand holding an unopened box of Kitsch Castor Oil Nourishing Shampoo Bar

Big plus: the bar looked like it had been barely used after our month-long testing period.

My hair felt soft and clean after every use.

The formula (which boasts hydrating ingredients like glycerin and vitamin B5) wont overdry or strip strands.

Hand holding a foaming Kitsch Castor Oil Nourishing Shampoo Bar

Its also crafted to strengthen the hair and increase thickness, thanks to itsmarshmallow root extractand elderberry ingredients.

I feel that the bar really nourished my hair and also hydrated it quite effectively, too.

The scent is very light and not overpowering at all.

Hand holding an unopened box of Kitsch Castor Oil Nourishing Shampoo Bar

The formula promises to reduce hair breakage and increase smoothness, and it delivers just that.

Besides the beauty benefits, shampoo bars are more sustainable.

According to Kayganich, one bar can replace up to three plastic bottles of shampooaka quite a while.

Davines LOVE Shampoo Bar

PHOTO: Amazon

Some brands even claim their bars last for 80 to 100 washes or up to six months.

All of our winners proved to still be intact after our monthlong testing period.

Those experts include:

Why Trust Byrdie

Shauna Beni-Haynesis a senior editor on staff at Byrdie.

Before and after comparison of a person using the Davines LOVE Shampoo Bar

Byrdie / Allison Vancura

She received a degree in journalism from SUNY Plattsburgh.

the-earthling-co-shampoo-bar

PHOTO: Amazon

A person’s hair before and after using The Earthling Co Shampoo Bar, and the product latrhered

Byrdie / Mikey Robins

superzero Strengthening & Scalp Stimulating Shampoo for Thinning Hair

PHOTO: Amazon

A person’s hair before and after using the Superzero Shampoo, and the product lathered in their hand

Byrdie / Ashley Smith