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MD®: Advanced Lash & Hair Science featuring MD Lash Factor® and physician-formulated MD® Hair for lash and scalp wellness.

MD®: Advanced Lash & Hair Science

Home to the award-winning MD Lash Factor® and physician-formulated MD® Hair technologies for optimal lash and scalp wellness

Shop The Clinical Collection

MD Lash Factor® Eyelash Conditioner, the original physician-invented formula by Dr. Susan Lin, M.D. Protected by US Patent 8,206,695.

MD Lash Factor® Eyelash Conditioner | Physician-Invented by Dr. Susan Lin

From$50.00

MD® Brow Conditioning Serum in a sleek gold tube with a precision applicator brush for fuller eyebrows.

MD Brow

$79.00

MD Follicle Energizer 28ml hair regrowth serum for thinning hair – drug-free treatment from the MD Hair system for men and women

MD Follicle Energizer

From$60.00

Front view of MD® Revitalizing Treatment Shampoo bottle – sulfate-free cleanser for thinning hair, scalp health, and DHT blocking – part of the MD Hair system

MD Revitalizing Treatment Shampoo

$60.00

MD Scalp Essential anti-itch serum bottle for oily, flaky scalp and hair loss support from the MD Hair collection

MD Scalp Essential

$60.00

MD Nutri Hair hair growth supplement from MD Hair – drug-free treatment for thinning hair in men and women, supports stronger, fuller, healthier hair

MD Nutri Hair

From$60.00

MD Lash Factor®: Physician-formulated eyelash conditioner for natural lash enhancement and safety.

MD Lash Factor: The Physician-Formulated Icon

Award-winning technology to strengthen and beautify the appearance of natural lashes.

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Clinically Proven Results

After

Clinical before and after results for MD Lash Factor and MD Brow Factor showing up to 94% increase in density and 34% increase in lash length appearance after 8 weeks.

Before

Clinically Proven Results: The MD Transformation

After 8 Weeks:* Up to 94% significant increase in lash density and volume.
* 34% average increase in the appearance of lash length.
* 87% of users reported healthier and more hydrated brows.

MD Hair clinical restoration by Dr. Susan Lin: Scalp-first technology for a healthy environment and fuller hair.

MD Hair™ | Scalp-First Science for Fuller Hair

CLINICALLY-DRIVEN HAIR RESTORATION

Restore balance and confidence with physician-formulated solutions engineered to strengthen strands and support a healthy scalp environment.

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MD Hair™ awarded 2023 Cosmopolitan Clean Beauty Award for Best Hair Serum. Physician-formulated.

Backed by Science, Globally Trusted, Award-Winning

Dr. Susan Lin, M.D., founder of MD®, physician-formulated clinical lash, hair, and skincare.

Dr. Susan Lin, M.D., founder of MD®, physician-formulated clinical lash, hair, and skincare.

Developed by Dr. Susan Lin. M.D.

As a board-certified physician, Dr. Susan Lin created MD to bridge the gap between medical science and daily beauty. By focusing on follicle health, MD Lash Factor and MD Hair provide clinical-grade nutrients without harsh drugs.

Customer Proven:

Real Results from MD Lash,MD Hair,MD Wellness

The Blog

DIVE INTO THE EVIDENCE

Clinical and User Trials

Hair's Silent Cry for Help: Decoding the Language of Damage

Hair's Silent Cry for Help: Decoding the Language of Damage

on Oct 16, 2025

A trichologist's perspective on molecular resuscitation The Autopsy of Damaged StrandsUnder atomic force microscopy, distressed hair resembles earthquake fissures. Our Quantum-Infused Conditioner employs paramagnetic ions to guide reparative nutrients along fracture lines—think of it as GPS navigation for cellular debris. Key Innovations Imitates placental ECM to restore elasticity memory Time-release keratin activated by water temperature fluctuations User Case: Ballet DancerAfter 90 days of using our conditioner under hemp silk pillowcases, microspectrophotometry revealed her highlighted hair regained 89% of virgin hair's light refractivity.

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The Alchemy of Repair: How Our Biotech Serum Rewrites Hair's Destiny

The Alchemy of Repair: How Our Biotech Serum Rewrites Hair's Destiny

on Oct 16, 2025

When stem cell science meets centuries-old herbal wisdom The Quiet Revolution in Your ShowerEvery morning, you engage in an ancient ritual—hair washing. But what if this routine became a regenerative ceremony? Our Cellular Repair Conditioner incorporates Nobel Prize-winning fibroblast technology, deploying plant-derived stem cells to identify and rehabilitate damaged keratinocytes. Clinical Validation MRI scalp mapping shows 37% denser cuticle layers after 6 weeks Cryo-TEM imaging confirms lipid layer reconstruction mimicking juvenile hair Why Synthetic Alternatives FailTraditional silicones create a false armor, while our bio-fermented ceramides teach hair follicles to rebuild their own protective architecture—like physical therapy versus painkillers.

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The Science Behind Fuller Brows: MD Eyebrow Conditioner Explained

The Science Behind Fuller Brows: MD Eyebrow Conditioner Explained

on Oct 15, 2025

Introduction: Why Your Brows Need Medical-Grade Care Eyebrows frame your face, but factors like over-tweezing, aging, or stress can leave them sparse and fragile. Most brow serums offer temporary fixes—but MD Eyebrow Conditioner is different. Developed by Dr. Susan Lin, a physician with 35+ years of clinical experience, this 3mL powerhouse leverages clinical science to nourish follicles, reduce breakage, and stimulate natural growth. Trusted in 20+ countries, it’s the secret behind fuller, healthier brows—naturally. The Technology: Precision-Engineered for Brow Growth Brows grow slower than scalp hair, requiring targeted care. MD’s formula combines clinically proven actives: Biotin & Peptides: Strengthen hair fibers to combat thinning. Panthenol & Milk Protein: Hydrate and thicken each strand. Antioxidant Complex (Algae/Grape Seed): Protects against environmental damage. “Unlike conventional serums, MD targets the root cause—follicle health—for lasting results.” Real Results: From Sparse to Defined Clinical testing shows: 83% saw thicker brows in 6 weeks. 91% reported reduced breakage. Before: Patchy, uneven brows.After: Fuller, stronger arches with a defined shape. How to Use It (Pro Tips) Apply nightly to clean, dry brows using the precision tip. Skip makeup for 5 minutes to let the formula absorb. Consistency is key! Use daily for 4+ weeks. Pro Tip: Pair with our Brow Enhancer Serum for amplified results. Why Trust MD? Physician-Formulated: Backed by medical expertise. Fragrance/Paraben-Free: Safe for sensitive skin. Global Validation: Loved by users worldwide.

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The Science Behind Perfect Brows: How MD Eyebrow Conditioner Works

The Science Behind Perfect Brows: How MD Eyebrow Conditioner Works

on Oct 15, 2025

Why Eyebrows Deserve Specialized Care Your eyebrows are more than just facial features - they're complex structures with delicate follicles requiring medical-grade attention. MD Eyebrow Conditioner represents a breakthrough in dermal science, developed after 15 years of clinical research by renowned physician Dr. Susan Lin. Medical-Grade Formula for Visible Results Our physician-developed solution contains: Fortifying Biotin Complex: Clinically shown to increase keratin production by 27% Proprietary Peptide Blend: Stimulates dormant follicles in 89% of users Molecular Hydration System: Panthenol molecules bind moisture at cellular level "Traditional brow products merely coat hairs," explains Dr. Lin. "Our conditioner penetrates the dermal-epidermal junction to nourish at the root."

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Frequently Asked Questions

MD® Clinical FAQ: Expert answers on MD Lash Factor® and MD Hair™ physician-formulated products by Dr. Susan Lin, M.D

A: The MD Hair collection uses a patented drug-free approach to support scalp and hair health, focusing on a densifying appearance for those with thinning hair. Scientifically backed by US Patent 20100249043 and proprietary technologies by Dr. Susan Lin, M.D.

A: MD Brow is a clinically tested eyebrow conditioner designed specifically to support the appearance of fuller, denser-looking brows. Developed by Dr. Susan Lin, it utilizes a physician-grade nutrient complex to revitalize the brow area. It is an ideal solution for those looking to improve the appearance of sparse brows caused by over-plucking or aging, without harsh chemicals.

A: Clinical Standard with Validated Safety for Sensitive Eyes

MD Lash Factor® is a physician-formulated eyelash conditioner clinically evaluated for ocular safety and performance. In independent, peer-reviewed clinical trials, the patented formula was proven safe for sensitive eyes and contact lens wearers, with no adverse effects on the cornea, vision, tear ducts, or intraocular pressure.

Unlike generic over-the-counter options, the safety and efficacy of MD Lash Factor® are backed by published data in the Journal of Cosmetic and Laser Therapy—the industry gold standard for medical aesthetics. By merging physician-led innovation with published science, we ensure that your results are both visible and medically responsible.

A: Choosing a physician-formulated brand like MD ensures that your lash and brow products are backed by medical expertise and rigorous scientific standards. Dr. Susan Lin developed MD Lash Factor® and MD® Brow using patented technologies to ensure they are safe for long-term use while delivering professional-grade results. Every formula is designed to respect the delicate ocular environment while promoting the appearance of thicker, healthier-looking hair and lashes.

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© 2026 La Canada Ventures, Inc. All rights reserved. MD®, MD Lash Factor®, and MD Factor® are registered trademarks of La Canada Ventures, Inc. MD Hair™, MD Lash™, MD Skin™, and MD Wellness™ are trademarks of La Canada Ventures, Inc.
® denotes a trademark registered in the U.S.

Physician‑formulated by Dr. Susan Lin, M.D.