• Hair Serum
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Hair Serum — 90-Day Supply

Hair Serum — 90-Day Supply

90-day supply (3 bottles) of Hair Serum, billed quarterly. Internal supply SKU for the quarterly subscription — sold as one unit on the storefront buy box.

$120.00
$120.00
Sale Sold out
  • Physician-Formulated
  • cGMP-Certified Facility
  • Research-Backed

Benefits

Bundle + Save 15% — The Complete System

Bundle + Save 15% — The Complete System

Add Hair Serum to your routine and save on your first order

$95.00
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THE FORMULA

Three targeted pathways. One topical formula.

    1. Follicle Activation & Growth Signaling
    2. Scalp Microbiome & Barrier Health
    3. Scalp Microbiome & Barrier Health

  • Follicle Activation & Growth Signaling

    Copper tripeptide-1 (GHK-Cu) and caffeine work at the follicle to support blood flow and signal the cells that drive hair growth — helping keep the growth phase active longer. Biotin acts as a cofactor for keratin synthesis at the follicle level.*

  • Structural Anchoring & Matrix Support

    Hair stays in place when the surrounding scalp tissue and extracellular matrix are healthy. Acetyl tetrapeptide-3 helps maintain the anchoring environment that keeps hair attached and structurally sound at the scalp level.*

  • Scalp Microbiome & Barrier Health

    A balanced scalp microbiome and healthy skin barrier create the foundation for healthy follicle function. Rosemary leaf extract and ferment-derived postbiotics help maintain scalp balance and barrier integrity over time.*

THE INGREDIENTS

7 research-backed ingredients

Copper Tripeptide-1 (GHK-Cu)

Biotin

Acetyl Tetrapeptide-3

Rosemary Leaf Extract

Caffeine

Bacillus Ferment

Saccharomyces Ferment Filtrate

What to expect over time

1 Month

The formula begins working at the follicle level. Active peptides and botanical extracts accumulate in the scalp with consistent daily application. Most users don't notice visible changes yet. Consistency matters more than anything at this stage.

2–3 Month

With continued use, the structural and signaling pathways have time to take effect. Hair may begin to feel stronger at the root. Scalp health continues to improve as the microbiome stabilizes. Hair changes typically take longer due to follicle cycling timelines.

3+ Month

Visible changes in hair density, thickness, and overall appearance become more noticeable as the formula compounds over successive growth cycles. Results vary by individual

How to Use:

How to Use:

  • Apply once daily to effected areas

Built to a standard most supplements don't hold themselves to

  • 7 research-backed ingredients

  • Physician-formulated

  • Dual-peptide formula for targeted support

  • Manufactured in cGMP-certified facilities

  • Drug-Free

  • No prescription required
Quote Image

Inflammation at the follicle is one of the quietest drivers of hair thinning, and most people don't realize it's even happening. The serum addresses what's happening at the scalp where new hair has to grow — copper peptides, rosemary, the ingredients I'd recommend a patient apply daily. No prescription. No systemic effects. Just targeted topical support for follicle health.

Dr. Adam Barron, MD

Board-Certified Rheumatologist

Studied at University of Miami School of Medicine · Co-founder, DR BARRON

Questions, answered.

Honest answers about the serum — what people ask us most.

How long before I see results?

Hair, skin, and nail support takes time because it follows your body's natural growth cycles. Most users notice changes in nail texture or strength within 2-3 months. Visible changes in hair density typically take 3-6 months of consistent daily use, since hair follicles cycle over months, not weeks. We recommend giving the formula at least 3 months before judging results.

Will this work for my type of thinning?

DR BARRON is designed for thinning hair from common, non-genetic causes — stress, postpartum changes, perimenopause and menopause, hormonal shifts, post-illness recovery, and age-related thinning. It is not designed for genetic hair loss (androgenic alopecia / male- or female-pattern), alopecia areata, or thinning caused by underlying medical conditions. If your thinning runs in your family or you've experienced rapid or patchy loss, we recommend seeing a board-certified dermatologist.

Is this safe to take with other medications?

We recommend discussing any new supplement with your healthcare provider, especially if you are taking prescription medications, are pregnant or breastfeeding, or have a medical condition. The formula contains common vitamins, minerals, and botanical extracts with no contraindicated ingredients flagged in published research, but every person's situation is different. Your doctor knows your full picture.

What's the difference between the gummies and the serum?

The Hair, Skin & Nails Gummies work from the inside — providing nutrients your body uses to support hair, skin, and nail health (biotin, collagen peptides, zinc, selenium, vitamin D, and more). The Hair Serum works at the surface — a topical formula with copper peptides, rosemary leaf extract, and caffeine, designed to support scalp health and follicle activity. They are designed to work together as a system, but each can also be used on its own.

Is this for men, women, or both?

Both. DR BARRON is formulated for adult men and women experiencing thinning from non-genetic causes. The Take the Quiz tool will recommend the right starting point for your specific situation — whether that is the gummies, the serum, or the full system.

Can I cancel my subscription anytime?

We are launching with one-time purchases only. A subscribe-and-save option is coming soon. Once it is live, you will be able to manage, pause, or cancel your subscription at any time from your account.

Still have questions? Email our team and we'll get back within 24 hours.