If you have tried a shampoo bar before and walked away with waxy, filmy hair, this is not that bar. The Rosemary Biotin Shampoo Bar is sulfate-free and silicone-free, built for damaged, straight-to-wavy hair that needs real structural support — not a coating that mimics it. It pairs fermented Longsheng rice water, which delivers amino acids, inositol, and antioxidants that bond to areas of damage along the hair shaft to reinforce and smooth, with rosemary leaf oil, an ingredient studied for scalp circulation support, and biotin as part of a multi-ingredient strengthening system targeting the look of thinning at the root. The lather is rich and creamy, rinses completely clean with no residue, and the bar ships in plastic-free packaging — every bar you finish is up to three fewer plastic bottles in the waste stream. Give it 2–3 washes to transition; after the first week, many people report more body and lift at the roots.

Sodium Cocoyl Isethionate, Behentrimonium Methosulfate, Longsheng Rice Water, Cocoa Butter, Sodium Lactate, Glycerin, Jojoba Oil, Cetyl Alcohol, Shea Butter, Butylene Glycol (Plant-Based), Stearic Acid, Hydrolyzed Rice Protein, Broccoli Seed Oil, Bamboo Extract, Rice Bran Oil, Vitamin B8, Vitamin B5, Rosemary Leaf Oil, Biotin, Lavender Flower Oil, Vitamin E, Marjoram Leaf Oil, Roman Chamomile Flower Oil, Peppermint Leaf Oil, Lemongrass Leaf Oil, Aloe Vera, Plai Root Oil, Kunzea Oil, Helichrysum Flower Oil

Sodium Cocoyl Isethionate — derived from coconut fatty acids; a mild, sulfate-free surfactant that cleans without stripping the hair's natural moisture barrier. (EWG: 1)
Behentrimonium Methosulfate — plant-derived from rapeseed oil; a conditioning emulsifier that detangles and smooths without silicone buildup. (EWG: 1)
Longsheng Rice Water — fermented rice water sourced from Longsheng, China; rich in amino acids, inositol, and antioxidants that reinforce and smooth the hair shaft.
Cocoa Butter — pressed from cacao beans; a richly emollient fat that seals moisture into the hair strand and adds slip to the bar's texture. (EWG: 1)
Sodium Lactate — derived from the natural fermentation of sugar; a humectant that helps the bar retain moisture and supports a balanced scalp pH. (EWG: 1)
Glycerin — plant-derived; draws moisture from the air into the hair shaft, supporting softness without synthetic coating. (EWG: 1)
Jojoba Oil — cold-pressed from jojoba seeds; structurally similar to the scalp's natural sebum, it conditions without clogging follicles. (EWG: 1)
Cetyl Alcohol — derived from coconut or palm oil; a fatty alcohol that adds conditioning slip and helps bind the bar's formula — not a drying alcohol. (EWG: 1)
Shea Butter — cold-pressed from shea tree nuts; rich in fatty acids and vitamins that soften and protect color-treated or heat-damaged hair. (EWG: 1)
Butylene Glycol (Plant-Based) — sourced from plant sugars; a lightweight humectant and solvent that helps active ingredients distribute evenly. (EWG: 1)
Stearic Acid — derived from plant fats; gives the bar its firm, long-lasting structure and adds a creamy feel to lather. (EWG: 1)
Hydrolyzed Rice Protein — rice protein broken into small chains that bond to areas of damage along the hair shaft to reinforce and smooth. (EWG: 1)
Broccoli Seed Oil — cold-pressed from broccoli seeds; a natural source of erucic acid that mimics the slip of silicone on the hair surface without synthetic residue. (EWG: 1)
Bamboo Extract — derived from bamboo stems; a natural source of silica that supports hair strength and adds light volume. (EWG: 1)
Rice Bran Oil — pressed from the outer bran layer of rice; rich in vitamin E and ferulic acid, it protects the hair strand from oxidative stress. (EWG: 1)
Vitamin B8 (Inositol) — found naturally in rice water; supports the appearance of stronger, smoother hair strands. (EWG: 1)
Vitamin B5 (Panthenol) — a provitamin that bonds to the hair shaft to help retain moisture, adding flexibility and reducing the appearance of breakage in damaged hair. (EWG: 1)
Rosemary Leaf Oil — steam-distilled from rosemary leaves; an ingredient studied for scalp circulation support and used as the bar's primary botanical active. (EWG: 1)
Biotin — a B-vitamin found in many foods; included here as part of a multi-ingredient strengthening system to support the scalp environment. (EWG: 1)
Lavender Flower Oil — steam-distilled from lavender flowers; contributes to the bar's botanical scent profile and is traditionally associated with a soothing scalp experience. (EWG: 1)
Vitamin E (Tocopherol) — derived from plant oils; an antioxidant that protects both the formula and the hair strand from environmental oxidative damage. (EWG: 1)
Marjoram Leaf Oil — steam-distilled from marjoram herb; contributes herbal depth to the scent and supports a balanced scalp environment. (EWG: 1)
Roman Chamomile Flower Oil — steam-distilled from chamomile flowers; known for its soothing properties on the scalp and a soft, floral contribution to the scent. (EWG: 1)
Peppermint Leaf Oil — steam-distilled from peppermint leaves; provides the cooling, clean finish you feel during the rinse and is included for its traditional use in supporting scalp comfort. (EWG: 1)
Lemongrass Leaf Oil — steam-distilled from lemongrass; adds a bright, green note to the scent and has natural antimicrobial properties that support scalp health. (EWG: 1)
Aloe Vera — cold-processed from aloe leaves; a lightweight humectant and soothing agent that calms the scalp and adds moisture without weight. (EWG: 1)
Plai Root Oil — steam-distilled from the root of Zingiber cassumunar, a plant native to Thailand; traditionally used to support a calm, comfortable scalp environment. (EWG: 1)
Kunzea Oil — steam-distilled from Kunzea ambigua, an Australian native shrub; supports a calm, balanced scalp environment. (EWG: 1)
Helichrysum Flower Oil — steam-distilled from Helichrysum italicum flowers; known for its restorative properties and contributes a warm, honeyed note to the botanical scent profile. (EWG: 1)

1. Wet your hair thoroughly with warm water — the warmer the water, the more easily the bar will lather.
2. Hold the bar in your palm and swipe it directly from roots to mid-length 3–4 times, or rub it between your hands first to build a lather and then apply to the scalp.
3. Work the lather into your scalp with your fingertips using small circular motions — spend at least 60 seconds here to let the rosemary leaf oil and rice water actives make contact with the scalp.
4. Distribute remaining lather through the mid-lengths and ends of your hair, focusing on any areas of damage or dryness.
5. Rinse thoroughly until the water runs completely clear — full rinsing is the single most important step to avoiding any buildup, especially in hard water.
6. After washing, stand the bar on its edge or store it on a draining soap dish between uses — keeping it dry between washes extends the bar's life significantly.