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FOR THINNING, LOW-VOLUME HAIR

YOUR SCALP, SUPPORTED. HAIR THAT HAS WEIGHT AGAIN.

★★★★★ 4.7/5 | 134,430  reviews

  • Cooler tone by wash 3 yellow and brassy tones visibly reduced
  • No sulfate dryness cleanses without stripping moisture from bleached hair
  • Biotin-supported thickness each wash supports fuller-feeling strands
  • Ends feel less brittle rice water amino acids repair dry, damaged fibers
  • Scalp stays calm pH-balanced formula does not aggravate a dry scalp
See What's Inside
Curated by Sephora editors 100+ washes per bar 87% saw less breakage 92% felt softer hair after 1 wash 1.4× more visible shine in 2 weeks
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FOR FINE, THINNING, AND LOW-VOLUME HAIR

Rosemary Biotin Shampoo Bar for Thinning Hair

4.6 (4042 reviews)
$11.19
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Description

If you've noticed your part widening or your hair lying flat no matter what you reach for, this bar was formulated with that specific shift in mind — not to promise a miracle, but to give your scalp and strands something real to work with. Rosemary leaf oil has been studied for scalp circulation support, while Longsheng Rice Water — the fermented rice water used by the Red Yao women of southern China, a tradition tied to their long-standing hair care practice — delivers amino acids, inositol, and antioxidants that work along the strand to support strength and texture. The sulfate-free lather is rich and creamy, rinses completely clean, and leaves no waxy residue — so hair dries with body at the root instead of lying flat. If you're switching from a liquid shampoo, allow 2–3 washes for adjustment; many people find their footing within the first few washes.

Ingredients

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

Ingredients Explanations

Sodium Cocoyl Isethionate — derived from coconut fatty acids; a mild, sulfate-free surfactant that cleans without stripping the scalp's moisture barrier. (EWG: 1)
Behentrimonium Methosulfate — a plant-derived conditioning emulsifier (not to be confused with quaternary ammonium compounds); helps detangle and smooth without silicone buildup. (EWG: 1)
Longsheng Rice Water — fermented rice water associated with the traditional hair care practice of the Red Yao women of Longsheng, China; rich in inositol, amino acids, and antioxidants that support strand resilience and surface smoothness.
Cocoa Butter — cold-pressed from cacao seeds; a rich emollient that supports moisture retention and gives the bar its creamy lather texture. (EWG: 1)
Sodium Lactate — the sodium salt of naturally occurring lactic acid; helps maintain the bar's pH balance and supports scalp skin barrier function. (EWG: 1)
Glycerin — plant-derived humectant; draws moisture to the hair shaft and scalp surface, countering the dryness that can accompany reduced scalp sebum production. (EWG: 1)
Jojoba Oil — pressed from the seed of the jojoba shrub; structurally similar to scalp sebum, it conditions without heaviness or residue. (EWG: 2)
Cetyl Alcohol — a fatty alcohol derived from coconut or palm; a clean emollient and thickener with no relation to drying ethyl alcohols. (EWG: 1)
Shea Butter — cold-pressed from the shea tree nut; softens and protects the strand without silicone coating. (EWG: 1)
Butylene Glycol (Plant-Based) — a plant-sourced humectant and solvent that helps active ingredients penetrate and distribute evenly. (EWG: 1)
Stearic Acid — a naturally occurring fatty acid found in plant oils; helps bind the bar's ingredients and contributes to lather creaminess. (EWG: 1)
Hydrolyzed Rice Protein — rice protein broken into smaller chains that can bond to the hair cuticle; supports strand strength and adds the tactile sense of thickness and body to fine hair.
Broccoli Seed Oil — cold-pressed from broccoli seeds; high in erucic acid, it has a lightweight, slip-rich feel that works without the coating associated with silicone-based ingredients — particularly useful for fine, flat hair.
Bamboo Extract — derived from bamboo stem; a natural source of silica that may support hair structure and scalp environment.
Rice Bran Oil — pressed from the outer layer of rice grains; rich in gamma-oryzanol, ferulic acid, and vitamin E; conditions and supports antioxidant protection along the strand.
Vitamin B8 (Inositol) — a naturally occurring carbohydrate found in rice water; associated with strand flexibility and reduced breakage when delivered topically.
Vitamin B5 (Panthenol) — a provitamin that penetrates the hair shaft, supporting moisture retention and reducing brittleness. (EWG: 1)
Rosemary Leaf Oil — steam-distilled from Rosmarinus officinalis; has been studied in a randomized trial for scalp circulation support and its association with hair count maintenance in androgenetic alopecia — results are specific to that studied population and do not establish efficacy for all hair thinning patterns. This is the scalp support story in this formula.
Biotin — a B-vitamin (B7) included here as a topical co-factor supporting scalp environment; topical biotin evidence is early-stage, and this ingredient is not claimed to drive hair growth independently.
Lavender Flower Oil — steam-distilled from Lavandula angustifolia; contributes to the bar's herbal scent profile and has been studied for its calming effect on scalp inflammation. (EWG: 1)
Vitamin E (Tocopherol) — a fat-soluble antioxidant derived from plant oils; helps protect scalp skin and strand lipids from oxidative stress. (EWG: 1)
Marjoram Leaf Oil — steam-distilled from Origanum majorana; part of the herbal scent complex; traditionally used for its soothing properties on the scalp.
Roman Chamomile Flower Oil — distilled from Anthemis nobilis; supports a calm, non-reactive scalp environment; adds a soft floral note to the scent.
Peppermint Leaf Oil — distilled from Mentha piperita; creates a mild cooling sensation on the scalp that signals thorough cleansing; has been explored in early research for its potential to support scalp circulation, though human evidence remains limited.
Lemongrass Leaf Oil — distilled from Cymbopogon citratus; contributes a clean, green note to the scent profile and has known antimicrobial properties relevant to scalp health.
Aloe Vera — gel derived from Aloe barbadensis leaf; a well-established soothing and hydrating ingredient that supports scalp barrier comfort, particularly useful when the scalp feels tight or reactive. (EWG: 1)
Plai Root Oil — steam-distilled from Zingiber cassumunar, a ginger-family root used in Thai botanical tradition; valued for its anti-inflammatory and soothing properties on skin.
Kunzea Oil — distilled from Kunzea ambigua, an Australian native shrub; supports a calm scalp environment and contributes a clean, slightly medicinal note to the scent.
Helichrysum Flower Oil — distilled from Helichrysum italicum; known for its skin-soothing and antioxidant properties; supports scalp resilience and rounds out the herbal scent profile.

How To Use

1. Wet your hair and scalp thoroughly with warm water — this is especially important with a bar; the warmer the water, the more readily the bar activates.
2. Hold the bar between your palms and rub until you feel a creamy lather begin to form — this usually takes about 10–15 seconds.
3. Apply the lather directly to your scalp first, working it in with your fingertips using small circular motions. Spend at least 60 seconds here — this is where the rosemary leaf oil and scalp-support ingredients do their work.
4. Draw any remaining lather down through the lengths of your hair; the hydrolyzed rice protein and conditioning ingredients will coat the strand as you rinse.
5. Rinse thoroughly until the water runs completely clear — no residue, no waxy feel. If you're in a hard water area, a brief cool-water final rinse can help close the cuticle and add lift.
6. If you're in your first 2–3 washes transitioning from a liquid shampoo, expect a brief adjustment period — this is normal as your scalp recalibrates. Many people notice more body at the root as the adjustment settles in.

REAL RESULTS, REAL CUSTOMERS

The part you stopped looking at — worth looking at again.

Three women, the same morning-mirror moment, and what shifted after a few weeks of a ritual that does something real.

BEFORE AFTER
Deborah M. — before Deborah M. — after
Deborah M.

"I live in Phoenix and our water is brutal — I could feel the mineral buildup dragging my fine hair flat by noon. After two weeks with this bar, my roots have actual lift when my hair dries. Not teased, not dry-shampooed. Just... body."

BEFORE AFTER
Karen S. — before Karen S. — after
Karen S.

"I was skeptical about bars after a waxy disaster with another one years ago. No adjustment period drama here. The lather is dense and it rinses completely clean. My scalp stopped feeling tight and itchy within the first week, which I wasn't even expecting."

BEFORE AFTER
Tricia L. — before Tricia L. — after
Tricia L.

"The part line was what got me. I'd been parting my hair differently for two years just to hide it. I'm not going to overstate it — but my roots feel like they have more weight behind them now, and I'm not styling around the part anymore. That's enough."

VERIFIED REVIEWS FROM WOMEN WITH FINE OR THINNING HAIR

THE PART YOU STOPPED LOOKING AT — THEY STARTED AGAIN.

Verified reviews from women with thinning, fine, or low-volume hair — at every age, in every water type.

Tiffany Y.
★★★★★

"After losing my hair twice I was terrified to try to grow it back, in fear of living th..."

Lianne R.
★★★★★

"I have been using Viori hair products, specifically the shampoo and conditioning bars,...."

Liza G.
★★★★★

"I love everything about this product! the smells are amazing the smoothness of the soap..."

Kristina H.
★★★★★

"I am 53 and my hair was dry and brittle and l was using the purple shampoo and conditio..."

Alicia S.
★★★★★

"Before Viori my hair was falling out by the handfuls. It was so thin and just overall l..."

Kristina R.
★★★★★

"I really love this bar, is helping my hair to grow healthy, keeps it moisturized and sh..."

Emma C.
★★★★★

"I fell in love with this company over a year ago! Not only is the shampoo and conditio..."

Jessica S.
★★★★★

"my hair health is through the roof ! Viori has left my hair feeling silky, very shiny, ..."

THE PROBLEM

Your Routine Stopped Working.

The volumizing shampoos, the biotin gummies, the dry-shampoo workarounds — and your part still looks wider than it did two years ago.

0 1

Buildup Is Weighing You Down.

Silicone-based thickening shampoos create the illusion of volume on day one, then leave a residue that coats fine strands and may drag them flat by midday — especially if your water runs hard. You're not imagining it; the product that promised lift may be part of what's pulling your hair down.

0 2

Your Scalp Feels The Difference.

The same harsh sulfates that once felt like a deep clean can leave your scalp tight and reactive — and if your scalp has grown more sensitive over time, a gentler cleanse may simply work better for you now. What cleared your roots in your thirties may not be what your scalp needs today.

0 3

Marketing Burned Your Trust.

You've read the biotin labels, watched the before-and-afters, and bought the drugstore thickening bars — and none of it moved the needle at your part line. You're not looking for another miracle claim; you're looking for a routine that actually does something real.

A toning bar that repairs while it tones.

THE ANSWER

Your Scalp, Supported.

One sulfate-free bar built around the ingredients your thinning hair actually needs — not the ones that just fake it.

The Rosemary Biotin Shampoo Bar pairs rosemary leaf oil — studied for scalp circulation support — with Longsheng Rice Water and hydrolyzed rice protein, which coat each strand with amino acids so hair may dry with more body instead of lying flat. Sodium Cocoyl Isethionate, the primary surfactant, cleans without stripping: no sulfates pulling moisture from a fine, already-sensitized scalp, no silicone residue from a drugstore volumizing shampoo quietly weighing strands down over time. Biotin works here as a B-vitamin co-factor alongside a full botanical blend — rosemary, peppermint, and marjoram — to support the scalp environment where your hair begins. If hard water has been coating your strands or humidity has been collapsing your roots by noon, this is a bar that works as hard as your routine — and rinses clean enough to let your hair prove it. Give it two to three washes to adjust.

See the full system
Why it works on bleached, brassy hair

Backed by the science

WHY IT WORKS

Three ingredients, three distinct mechanisms — your scalp, supported from root to strand.

  1. Rosemary at the Root

    Rosemary leaf oil contains rosmarinic acid, ursolic acid, and carnosic acid — bioactive compounds studied for their ability to support scalp circulation and reduce oxidative stress at the follicle. In a randomized controlled trial in participants with androgenetic alopecia, topical rosemary oil was associated with increases in hair count over six months, with fewer reports of scalp itching than the comparator group. A separate 90-day study found a rosemary-lavender oil formulation was associated with improvements in measured hair thickness and reduced hair fall compared to a control group, though that evaluation was conducted on a specific commercial serum and results may not transfer directly. Rosemary leaf oil has been studied for scalp circulation support; this bar includes it for that mechanism.

    Panahi et al. 2015 (SKINmed) — RCT, androgenetic alopecia population
  2. Rice Protein, Strand by Strand

    Longsheng Rice Water and hydrolyzed rice protein work along the hair shaft itself, not at the follicle. The small molecular weight of hydrolyzed rice peptides allows them to form a protective film on the cuticle, which may help improve the feel of tensile strength and reduce the appearance of breakage in fine, fragile strands. The result is hair that dries with more body and resists the midday limpness that hard water mineral buildup and humidity tend to accelerate in thinner hair.

    Viori References Page
  3. Sulfate-free cleansing preserves moisture in porous hair

    Bleached hair is highly porous — it absorbs and loses moisture faster than untreated hair. Sulfate-free cleansers remove buildup and oil without disrupting the lipid layer that keeps moisture locked inside the shaft.

    Journal of Cosmetic Dermatology — sulfate-free formulations and hair moisture
SEE ALL REFERENCES →

Our Story

THE STORY BEHIND THE BAR

From the rice terraces of Longsheng to your shower — the most powerful, clean haircare you have ever used.

How To Use Videos

WHAT MAKES VIORI DIFFERENT

Everything you want to know — answered in 30 seconds or less.

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How long does the bar last?
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How do I store my products?
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How to use a conditioner bar?
How to Use a Bamboo Bar Holder
How to Use a Bamboo Bar Holder

Build Your Bundle

BAR, DUO, OR THE FULL SYSTEM.

Start with the bar, or build a routine that works from scalp to strand.

Purple Shampoo Bar with Biotin – Blonde & Gray | VIORI

The Bar

The Rosemary Biotin Shampoo Bar — your scalp, supported, one wash at a time.

  • Sulfate-free cleanse with Sodium Cocoyl Isethionate — no stripping
  • Rosemary leaf oil to support scalp circulation at the root
  • Longsheng Rice Water and hydrolyzed rice protein for strand strength
  • Rich, creamy lather that rinses clean — no waxy residue
  • Herbal, rosemary-forward scent with a clean earthy finish
Our duo
Purple Shampoo Bar with Biotin – Blonde & Gray | VIORI
Purple Conditioner Bar with Biotin – Blonde & Gray | VIORI

The Duo

Pair the shampoo bar with a matching conditioner bar for hair that feels like it has weight again.

  • Shampoo bar preps the scalp; conditioner seals and smooths the strand
  • Hydrolyzed rice protein works both steps for cumulative strength
  • Fine hair gets body and movement — not silicone-coated flatness
  • Both bars are sulfate-free, paraben-free, and plastic-free
  • The part you stopped looking at — supported from two steps
Purple Shampoo Bar with Biotin – Blonde & Gray | VIORI
Purple Conditioner Bar with Biotin – Blonde & Gray | VIORI
Bamboo Shampoo Bar Holder – Eco-Friendly | VIORI

The Full System

Three steps — cleanse, condition, treat — for a scalp routine that feels intentional, not reactive.

  • Adds a scalp-focused treatment step to the shampoo and conditioner
  • A complete ritual: clean without stripped, nourished without weighed down
  • Rosemary and rice water working at every stage of your wash routine
  • More bar per wash — the lowest per-wash cost of the three options

FAQ

GOOD TO KNOW BEFORE YOU BUY.