Peptides are the structural building blocks for brow definition. Our formula uses Myristoyl Pentapeptide-17 to condition and strengthen hair fibers, minimizing breakage and supporting the appearance of longer, fuller brows.

Biotin (Vitamin B7) is the essential vitamin for follicle resilience. It helps condition each brow hair, supporting the look of sparse or over-tweezed areas over time.

Panthenol (Pro-Vitamin B5) provides deep hydration for a smooth, refined texture. It acts as a humectant, coating the brow hair to improve elasticity and prevent the brittle feel often caused by aging or environmental stressors.

Sodium Hyaluronate is the "moisture magnet" for healthy brow skin. By holding 1,000x its weight in water, it ensures the skin beneath the brows remains hydrated, creating the ideal environment for healthy-looking hair.

Serenoa Serrulata (Saw Palmetto) is a botanical extract known for its ability to support hair density and balance the skin environment around the follicle.

These marine extracts are rich in minerals and antioxidants that protect the delicate brow skin from environmental pollutants and oxidative stress.

Yes, it contains a gentle amount of Retinyl Palmitate to support skin renewal in the brow area, helping prevent dead skin cells from clogging the follicles.

Niacin improves the appearance of skin texture and supports the moisture barrier, helping the skin stay hydrated so the Peptides can work more effectively.

Water (Aqua), Butylene Glycol, PPG-26-Buteth-26, PEG-40 Hydrogenated Castor Oil, Apigenin, Oleanolic Acid, Biotinoyl Tripeptide-1, Myristoyl Pentapeptide-17, Glycerin, Hydrolyzed Glycosaminoglycans, Sodium Hyaluronate, Panthenol, Biotin, Niacin (Vitamin B3), Retinyl Palmitate (Vitamin A), Pyridoxine HCL (Vitamin B6), Algae Extract, Saccharomyces/Zinc Ferment, Serenoa Serrulata (Saw Palmetto) Fruit Extract, Enteromorpha Compressa Extract, Ulva Lactuca (Sea Lettuce) Extract, Vitis Vinifera (Grape) Seed Extract, Rosmarinus Officinalis (Rosemary) Leaf Extract, Thymus Vulgaris (Thyme) Flower/Leaf Extract, Pueraria Lobata Root Extract, Aesculus Hippocastanum (Horse Chestnut) Seed Extract, Sodium Lactate, Sodium PCA, Sorbitol, Proline, Simmondsia Chinensis (Jojoba) Seed Oil, C12-15 Alkyl Benzoate, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Xanthan Gum, Triethanolamine, Disodium Phosphate, Caprylyl Glycol, Phenoxyethanol.

The serum was developed by Dr. Susan Lin, a physician with over 35 years of clinical experience in anti-aging and dermatological care, ensuring a professional-grade, science-backed solution.

Yes. MD Brow Serum is formulated without parabens or harsh fragrances.

MD Brow Conditioning Serum is developed and manufactured in the USA to high quality-control standards. A small number of other MD products are made by specialist partners overseas.

Physician-formulated means the product was developed by a doctor, with ingredients selected from the published cosmetic science rather than for surface effect alone.

No. MD Brow Conditioning Serum does not contain a prostaglandin analogue — it is built on peptides, vitamins and botanical extracts, and the full ingredient list is published on the product page. Formulations differ across the MD range, so please check the ingredient list for each product. MD Lash Factor®, for example, contains dechloro ethylcloprostenolamide, a cosmetic-grade prostaglandin analogue.

We recommend a once-daily application. In a 56-day independent consumer-use study of our brow formula, 78% of participants agreed their brows seemed thicker. These are self-assessment results under study conditions; individual results may vary. Applying more often does not speed up the natural growth cycle.

We recommend waiting 2–3 minutes for the serum to dry completely before applying brow pencils, gels, or powders to ensure the formula is fully absorbed.

This specific formula is optimized for the thicker skin and hair of the eyebrows. For lashes, we recommend using our MD Lash Factor®, which is specifically tested for the lash line.

No. Unlike styling gels, our conditioner is a lightweight, clear serum that absorbs fully into the skin and hair, leaving no residue or stiffness.

The serum conditions sparse areas with biotin and peptides, which can help improve the appearance of brows thinned by over-tweezing or age. It is a cosmetic conditioner and will not create new hairs where the follicle is no longer active.

It is designed for both. The conditioning agents support the appearance of density for thinning brows, and of length and definition for short or fine hairs.

Absolutely. The formula is clear, fragrance-free, and non-greasy, making it a good choice for men who want to improve the look of sparse or "salt and pepper" eyebrows.

No. Our serum is designed for topical application only to the eyebrow area and does not contain ingredients associated with iris color changes.

The serum is applied to the brow area and is formulated not to migrate. As with any product used near the eyes, apply carefully, and remove contact lenses first if you prefer. In consumer-use testing, most participants reported no irritation under study conditions. Discontinue use if irritation occurs.

When used as directed (once daily), a single tube typically lasts between 3 to 4 months, making it a highly cost-effective professional treatment.

Yes, the sleek, leak-proof applicator is designed for travel and fits easily into any TSA-approved toiletry bag.