The 9 Best Conditioner Bars

Best Overall

EcoRoots Moroccan Oil Conditioner Bar

View On Ecoroots.us

EcoRoot's Moroccan oil conditioner bar is top pick because it's vegan, good for nearly all hair types, and made with a robust list of natural and plant-based ingredients. A blend of argan oil, coconut oil, and cocoa butter help to nourish and moisturize hair. It's made in the United States, and it comes in recyclable or compostable paper packaging. One bar is good for about 55 uses.

EcoRoots is a woman-founded brand that specializes in low-waste an eco-friendly products. As a member of 1% for the Planet, the company donates a portion of all sales to environmental non-profits.

Best Shampoo and Conditioner

Lush Avocado Co-Wash

View On Lushusa.com

It’s creamy, hydrating, and washes and conditions all in one step. Lush’s Avocado Co-Wash is great for defining curls and keeping frizz at bay, and its bergamot scent (made from bergamot oil) is a cheerful, fruity mood lifter. Made with avocados, cupuaçu butter, fair-trade organic cocoa butter, and cider vinegar, this bar moisturizes and shines without stripping out natural oils.

Pinch off a chunk of the bar and work it into a lather in your hands, or run the bar over wet hair and let it do its magic for clean, shiny, nourished locks.

Best for Damaged Hair

Chagrin Valley Soap & Salve Co. Butter Bar Conditioner

View On Amazon $13 View On Chagrinvalleysoapandsalve.com

Made to be a cross between a lotion bar and a shampoo bar, this conditioner bar is the just the right amount of hydration. After shampooing, apply the conditioner bar to the driest areas of the hair strand–like ends–to help with frizz. Babassu oil, coconut oil, shea butter, and cocoa butter provide moisture, while coconut milk helps to soothe dry scalps and manage frizz.

This bar is free of sulfates, silicone, and parabens, and comes in green packaging. It has earned an impressive array of third-party certifications, including one from the Rainforest Alliance. Want to try before making the commitment? Chagrin Valley offers this bar in a 1.7 ounce sample size.

Best for Curly Hair

Bar None Hydrating Conditioner Bar

View On Bar-none.co View On Urban Outfitters

Packed with moisture-locking ingredients like coconut and shea butter, the Bar None conditioner bar helps soften hair and tame frizz while adding shine and silkiness. It leaves curls more defined, nourished, and healthy.

Added bonuses: The plastic-free packaging is compostable, and a commitment to naturally-derived ingredients means you’ll only find a cruelty-free, vegan bar with no parabens or SLS.

Best for Fine Hair

Love Beauty and Planet 2 in 1 Shampoo and Conditioner Bar

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Yes, technically this is a two-in-one shampoo and conditioner bar, but for those with fine hair that tends to fall flat and look a bit greasy, this is the bar for you. Organic coconut water combined with mimosa flower moisturizes hair and leaves you with strong, balanced strands.

Fine-hair fans love it for the added volume, and environmental advocates will love it for its clean ingredients: organic coconut oil, ethically-sourced mimosa flower, and naturally-sourced coconut water. It leaves out many of the ingredients people have concerns about: silicones, parabens, dyes, and sulfate cleansers. Love Beauty and Planet products are affordable and widely available at drugstores.

Best for Oily Hair

Superzero Conditioner Bar for Normal/Oily Hair

View On Superzero.com View On Verishop.com

This plastic-free bar uses avocado oil, cocoa butter, camomile oil, and hemisqualane, which is a popular hair-care ingredients derived from fermented sugar cane. It’s formulated to soften and smooth without weighing hair down. The recipe is sulfate- and paraben-free, as well as vegan and safe for color treated hair.

Superzero is certified climate neutral by Climate Partners, which means the carbon emissions associated with the manufacturing are off-set through investments in clean energy projects. The company is also a member of 1% for the Planet.

Best for Color-Treated Hair

HiBar Maintain Conditioner

View On Amazon $13 View On Grove.co View On Hellohibar.com

We found that HiBAR will leave hair feeling soft and manageable. This conditioner bar is 100% safe for color-treated hair, and does not contain sulfates, silicone, or phthalates. Essential oils like lime, orange, lemon, grapefruit, and ginger root oils give the bar a fresh, citrus aroma that isn’t too overpowering. Fans love the shape of the bar, which helps provide a no-slip grip, and enjoy the company’s commitment to cruelty-free products.

"The good results were immediately obvious. My hair was extremely soft, thoroughly clean, and not frizzy at all." ~ Katherine Martinko, Treehugger Senior Editor

Best for Dandruff

Beauty and the Bees Tasmanian Real Beer Conditioner Bar

View On Amazon $13

Surprisingly, one of the best natural treatments for dandruff is beer. Due to its high vitamin B and yeast content, beer helps hair become bouncy, shiny, voluminous, and flake-free. Beauty and the Bees is raising a glass–er, a bar–to this with its beer conditioner bar.

Using beer brewed naturally from small breweries in Tasmania, Australia, this conditioner bar moisturizes and conditions without leaving hair heavy. Leatherwood beeswax, honey, mango butter, and Tasmanian hop-infused certified-organic raw coconut oil provide nourishing essential oils as well, leaving hair full of bounce without weighing it down.

One caveat: If you're a vegan who chooses not to use beeswax or honey, this product is not for you.