The average person uses 10-15 bottles of shampoo per year. That is a lot of plastic for something that is mostly water.
Shampoo bars eliminate the plastic entirely. They are concentrated (no water added), last 2-3x longer than a bottle, and travel like a dream. We tested 12 bars over 6 weeks on straight, wavy, curly, and coily hair. These 5 actually performed — and in some cases, outperformed their liquid counterparts.
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The best shampoo bar we tested for curly hair. The rice water base adds slip and definition that our curl-pattern testers loved. One bar replaced two full bottles of liquid shampoo.
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If you struggle with oily roots, this bar is a game-changer. The tea tree oil keeps scalp oil in check while lavender soothes irritation. Our oily-scalp testers went from daily washes to every other day.
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HiBar solved the biggest shampoo bar problem — the slippery soap issue. The ergonomic shape is genuinely easier to hold, and the formula adds noticeable volume to fine hair without weighing it down.
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For dry, damaged, or color-treated hair, this is the most nourishing bar we tested. The coconut oil and shea butter combination leaves hair soft and manageable — no conditioner needed for some hair types.
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The most versatile shampoo bar in our test. It performed well across all hair types, produced a satisfying lather, and lasted the longest — nearly 70 washes in our testing. If you want one bar that works for everyone in the household, this is it.
Yes — when formulated correctly. Shampoo bars use the same cleansing agents (surfactants) as liquid shampoos, just in a solid, concentrated form. The key is finding a bar with quality surfactants like sodium cocoyl isethionate (from coconut) rather than harsh sulfates. All the bars we recommend clean effectively without stripping.
A quality shampoo bar typically lasts 50-80 washes, equivalent to 2-3 bottles of liquid shampoo. To maximize lifespan, store the bar on a soap dish that allows drainage so it dries completely between uses. Never leave it sitting in a puddle of water.
Some people experience a 1-3 week adjustment period as their scalp recalibrates oil production. Traditional liquid shampoos often contain silicones that coat the hair, and it takes a few washes for these to fully clear. Stick with it — most people find their hair looks and feels better after the transition.
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Founder of Beautiful Vegan
Testing cruelty-free skincare since 2009. Committed to helping you find beauty products that work for your skin and the planet.
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