Bristle

What Bristle does

Bristle Health is a privately held, direct-to-consumer wellness company founded in 2020 and headquartered in San Francisco. It sells a saliva-based oral microbiome test through its e-commerce storefront at bristlehealth.com, priced at $169 (sale) or $189 (regular), and a companion oral probiotic supplement at $29.99 (sale) or $35 (regular). The flagship test analyzes 800+ species of oral bacteria and fungi in a CLIA-certified U.S. laboratory and returns a personalized care plan within two to three weeks, addressing chronic conditions such as bad breath, gum inflammation, tooth decay, oral fungi, and burning mouth, and connecting oral findings to systemic health outcomes.

The company's underlying technology is a saliva sequencing and analysis pipeline that profiles the relative abundance of hundreds of microbial species, identifies pathogenic strains, and maps results to product, hygiene, and dietary interventions. The platform supports a secondary B2B channel through a 'For Providers' page used by dental offices and functional medicine practices, evidenced by 20+ dental logos on the website and a network of dental advisors. Bristle is also exploring adjacent verticals through a December 2025 joint research partnership with Tiny Health on oral-gut microbiome connections.

Bristle's business model is predominantly one-time product sales to consumers, with HSA/FSA eligibility reducing purchase friction and free U.S. shipping as standard (sales are restricted in New York). The company has cumulatively served 10,000+ customers and reports a 4.8/5 rating, with 97% of users reportedly finding a root cause solution. It has raised approximately $3.1 million across a 2021 Y Combinator pre-seed ($125K), a 2021 GSK NEXT relationship, and a 2022 $3.0 million round led by Initialized Capital with participation from R/GA Ventures and Y Combinator.

Name

Bristle

Legal name

Bristle Health

Website

https://bristlehealth.com

Company type

Private

Founded year

2020

Operating status

Operating

Headcount range

1–10 employees

Short description

Bristle Health sells a saliva-based oral microbiome test (priced at $169) and companion probiotic ($29.99) directly to consumers and dental providers through its e-commerce storefront. The CLIA-certified test profiles 800+ bacterial and fungal species to identify root causes of bad breath, gum disease, and tooth decay, and has served 10,000+ customers.

Ownership category

akta.pro rank

Product category

Oral Health Diagnostics

NAICS

Medical Laboratories (621511), Medical and Diagnostic Laboratories (6215)

SIC

Services-Medical Laboratories (8071)

akta.pro primary industry

Caries Risk Assessment & Preventive Planning (HLABAHAE)

akta.pro secondary industry

Oral Care Products (Toothpaste, Mouthwash, Dental Floss, Whitening) (CRADAMAA)

Keywords

• Oral microbiome testing
• Saliva diagnostics
• Oral health testing
• Oral care probiotics
• Microbiome analysis

Headquarters

HQ city

San Francisco

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Technology or R&D, Supply Chain, Marketing or Sales, Personnel, Operations

Revenue model

1. Oral Health Test Sales: Direct sales of saliva-based oral microbiome tests to consumers via e-commerce. Tests are one-time purchases with results delivered in 2-3 weeks along with personalized care plans. Price point of $169 (sale) / $189 (regular).
2. Oral Probiotic Supplements: Sales of proprietary oral health probiotic supplements, specifically The Oral Health Probiotic by Bristle. One-time or recurring purchase of $29.99 (sale) / $35 (regular).

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Bristle sells a direct-to-consumer saliva-based oral health test that profiles 800+ species of bacteria and fungi to identify root causes of oral health issues such as bad breath, gum disease, and cavities, and pairs it with a proprietary oral probiotic supplement. Customers receive a personalized care plan with product, hygiene, and dietary recommendations within 2-3 weeks of mailing in their saliva sample. Tests are analyzed in a CLIA-certified U.S. laboratory, and the company also supports a provider channel for dental and functional medicine practitioners.

Product overview

Bristle offers a unified oral health platform centered on its flagship Bristle Oral Health Test, a comprehensive saliva test that analyzes the complete oral microbiome (800+ bacteria and fungi species). The platform delivers personalized care plans with research-backed product, hygiene, and diet recommendations. As an add-on offering, The Oral Health Probiotic by Bristle complements the testing service by providing targeted probiotic supplementation based on individual microbiome results.

Differentiator

Problem solved

Functional benefit

Products and services

• Bristle Oral Health Test A saliva-based at-home test that analyzes 800+ species of oral bacteria and fungi to identify the microbial root causes of oral health issues such as bad breath, gum disease, cavities, oral fungi, and burning mouth. Includes a saliva collection kit, prepaid return envelope, CLIA-certified U.S. laboratory analysis, and a personalized care plan with product, hygiene, and dietary recommendations delivered online within 2-3 weeks. Targeted at health-conscious consumers and recommended by dental and functional medicine providers.
• The Oral Health Probiotic by Bristle A daily oral probiotic supplement designed to support oral health by promoting beneficial bacteria populations in the mouth. Recommended as part of the personalized care plans generated from Bristle's oral microbiome test, with a 30-day supply priced at $29.99 (sale) / $35.00 (regular). Sold direct-to-consumer via bristlehealth.com.

Quantifiable outcome

• 97% of users report finding a root cause solution after working with Bristle
• +5 more outcomes

Named customers7 records

Segments3 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

AI capability3 records

Feature4 records

Partnerships

One partnership is on record.

• Tiny HealthcoreStrategic or Co-development Partner · 16 December 2025Joint research partnership with Tiny Health to conduct a pioneering study examining the bidirectional connection between oral and gut health. The study analyzes both oral and gut microbiomes simultaneously using at-home testing kits. Research aims to uncover patterns enabling earlier detection of imbalances linked to conditions like IBS, metabolic dysfunction, and chronic inflammation. Study offers participants comprehensive oral and gut microbiome tests at exclusive research pricing.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• OralDNA Labs (Access Genetics): OralDNA Labs provides saliva-based diagnostic tests for dental and periodontal disease risk through dental professionals. It is the closest direct peer to Bristle, both targeting oral microbiome and salivary diagnostics, though OralDNA is channeled through providers rather than D2C.
• Tiny Health: Tiny Health is an at-home microbiome testing company focused on gut and vaginal microbiomes for families. It is Bristle's December 2025 research partner and a direct peer in the at-home microbiome testing category, with overlapping science, customer demographic (health-conscious parents), and provider network.
• Hyperbiotics PRO-Dental: Hyperbiotics sells PRO-Dental, an oral probiotic chewable targeting oral microbiome balance. It is a direct competitor to Bristle's Oral Health Probiotic and competes for the same proactive oral-health consumer.
• Life Extension FLORASSIST Oral Hygiene: Life Extension sells FLORASSIST Oral Hygiene, a lozenge-based oral probiotic supplement targeting gum and tooth health. It is a direct competitor in the oral probiotic category and competes for similar health-conscious consumers shopping in the supplements channel.

Broad incumbents

• Viome Life Sciences: Viome offers at-home gut and oral microbiome testing paired with personalized nutrition recommendations. As a larger, well-funded incumbent in the direct-to-consumer microbiome testing space, Viome competes with Bristle for similar wellness-oriented consumers but operates at broader scale and with a wider product line.
• BioGaia: BioGaia is a Swedish probiotic company whose L. reuteri strains (including Prodentis) are widely used in oral health applications and clinical research. It is a leading incumbent in the oral probiotic category that Bristle's probiotic competes against, with stronger clinical validation and global distribution.
• TheraBreath: TheraBreath is a major oral care consumer brand focused on halitosis and gum health, founded by Dr. Harold Katz. It competes for the same bad-breath-conscious consumer Bristle targets, but sells mouthwashes, toothpastes, and lozenges rather than microbiome diagnostics.
• Sunstar GUM: Sunstar's GUM brand is a global oral care incumbent spanning toothbrushes, interdental, and specialty products. While not directly testing microbiomes, it competes for shelf space, dental professional endorsements, and consumer oral-health mindshare with Bristle.
• Quip: Quip is a D2C oral care brand selling electric toothbrushes, toothpaste, and floss on subscription. While not in microbiome testing, it competes for the same health-conscious D2C oral care consumer and has a more developed subscription and brand-building playbook.

Emerging players

• Garden of Life (Oralbiotics): Garden of Life's Oralbiotics line offers oral probiotic supplements sold through natural and wellness retail channels. It competes for the same proactive oral-health shopper as Bristle, with broader distribution via Sprouts, Whole Foods, and online retailers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/bristlehealth
• Facebookfacebook.com/bristlehealth
• LinkedInlinkedin.com/company/bristlehealth
• Instagraminstagram.com/bristlehealth

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds3 records

Investors4 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Bristle