The Science
The Science
The KilgourMD Dual Action System is backed by over 40 published clinical and laboratory studies – making it one of the most scientifically-validated natural formula on the market.
Clinical Results
Clinical Results
The Prevention Scalp Serum leads with GlycoRoot™, a KilgourMD-developed, clinically tested technology that pairs phytoglycogen with basil root extract to noticeably reduce shedding. It works alongside Anagain™, Procapil®, Capixyl®, stabilized liposomal Vitamin C, and the KilgourMD Soothing Shield.
How to Use
How to Use
- Start dry Use a dry or towel-dried scalp. No pre-wash needed. On wash days, wash first, then apply.
- One full dropper, once daily Your dropper dispenses a full 1 mL in a single step. Press once, then release slowly to let the dropper fill completely.
- Part, apply, massage Part your hair so you can see your scalp. Apply the full dose across the scalp, not the hair. Massage with your fingertips for 30 to 60 seconds, starting where you applied the serum and working outward in small circles.
- Do not rinse Once your scalp is dry, style as usual.
The Prevention Scalp Serum | Hair Growth Serum for Hair Loss
-
DECREASE VISIBLE
HAIR FALL -
REVERSE LOST
FULLNESS -
PREVENT
PREMATURE SCALP
AGING
Glycoroot™ | protect + stimulate
We developed GlycoRoot for our Prevention Serum. It's made with microscopic particles of plant glycogen, a natural energy source. The glycogen gives your hair follicles a boost of energy and carries our hero basil root extract deep inside them. Together, they help wake up the natural signals that tell hair to grow, for visibly thicker, fuller-looking hair.
Anagain™ | reactivate + extend
Derived from organic pea sprouts, this ingredient extends your hair's anagen (growth) phase by up to 78%, meaning each strand grows significantly longer before naturally shedding. By reducing the telogen (resting) phase by 34%, it ensures more follicles stay actively producing hair at any given time. AnaGain™ works alongside specific genes (FGF7 and Noggin) that control hair growth cycles. Scientific studies show it increases hair density through messaging to dermal papilla cells - the "command center" of each follicle responsible for hair production.
Procapil® | nourish + strengthen
A bioengineered complex that improves scalp nutrient delivery by 121% while reducing hair loss by 58%. This trio of active molecules (biotinyl tripeptide-1, apigenin, and oleanolic acid) works synergistically to prevent premature follicle aging and strengthen the hair bulb structure, protecting against free radical damage while supporting cellular metabolism. It also suppresses DHT locally at the follicle without affecting hormone levels elsewhere, making it ideal for menopausal women seeking natural and safe solutions.
Capixyl® | strengthen + calm
A scientifically advanced complex that reduces scalp inflammation by 48% while increasing hair density by 79% in just four months. This powerful ingredient combines red clover extract rich in Biochanin A (a natural DHT suppressor) with acetyl tetrapeptide-3, a biomimetic peptide that strengthens hair anchoring at the root. By addressing both scalp inflammation and follicle miniaturization simultaneously, Capixyl® creates an optimal scalp environment where hair can thrive. Clinical studies show it outperforms the leading alternative by 81% while being drug and side-effect free.
Stabilized Liposomal Vitamin C | shield + protect
By mitigating oxidative stress and promoting collagen gene expression, vitamin C combats photoaging and natural scalp aging. Clinical evidence supports its role in increasing dermal collagen, which is essential for maintaining healthy hair follicles. The vitamin C in our formula works synergistically with other antioxidants to protect follicles from free radical damage while supporting the structural integrity of the scalp tissue where follicles are anchored.
KilgourMD Soothing Shield | calm + soothe
Contained within The Prevention, piroctone, bisabolol, panthenol, and zinc combine to soothe the scalp and reduce harmful 'inflammaging'.
-
98%
Of participants saw a measurable decrease in shedding by month 4
(clinical trial comprised of 43 women ages 30-65)
-
60.3%
Fewer hairs shed in Combing Test
(Day 120 vs. baseline)
-
53%
Showed clinically significant growth
(Day 120, expert assessment)
Proprietary GlycoRoot™ and AndroLock™ have been evaluated in a peer-reviewed clinical trial.
We intentionally designed our serums to work perfectly together, as well as with your lifestyle. For optimal results though, here are some tips from us.
Apply to a dry or lightly damp scalp. These formulas are designed to absorb into the scalp, not coat the hair.
Your dropper dispenses a full 1 mL in a single step. Press once, then release slowly to let the dropper fill completely.
Part the hair and apply directly to thinning or shedding areas. Massage gently for 30-60 seconds. Do not rinse. Let it absorb and style as usual.
Use daily. If you miss a day, simply resume, no need to double up.
What's the optimal way to use the Prevention serum?
The most important factor in seeing results from the serum is consistent, daily use. The optimal routine is whichever approach fits most naturally into your day and allows you to use it consistently — whether you apply morning or evening, or whether you apply on wet or dry hair or before styling.
The key is giving the product enough time to absorb properly. In our clinical studies, we allowed the products to absorb for approximately 12 hours, so we recommend avoiding showering or washing the treated area during that time.
What is the difference between the Prevention and Treatment serums?
The Treatment and Prevention serums were formulated by Dr. Kilgour to work together as a dual-action system. Because they target different aspects of the hair-thinning process, using both consistently is expected to provide the strongest overall results.
- Prevention Serum: Focuses on creating a healthier scalp environment by supporting scalp balance, reducing inflammation and oxidative stress, and helping minimize shedding.
- Treatment Serum: Focuses more on supporting follicle activity and improving the appearance of hair density and fullness in areas that are already thinning.
For the most comprehensive approach, we recommend using both serums together rather than relying on just one. Shop the bundle here.
What's the best technique for applying serum to get full scalp coverage if I have super fine or thick hair?
The recommended amount for each serum is 1 mL per day. However, depending on your hair type and density, you may need slightly more to ensure the serum reaches and covers your entire scalp.
For fine or thin hair, 1 mL may be enough to provide full scalp coverage. With thicker or denser hair, more hair sits between the serum and your scalp, so you may need to use additional product to make sure it reaches the areas you’re targeting.
For the best coverage, part your hair into sections and apply the serum directly to the scalp, rather than applying it primarily to the hair. This helps ensure the product reaches the scalp where it’s intended to work.
How is KilgourMD different from regular hair growth products? Is it worth it?
KilgourMD stands out from other brands by formulating with clinically studied ingredients like Redensyl®, Capixyl®, and Procapil® at their proven effective dosages and in higher concentrations of active ingredients overall — while many other brands include only trace amounts for label appeal rather than real results.
What is your return policy?
While visual improvements typically take 3–6 months of consistent use, many people feel less scalp irritation and a healthier-feeling scalp within the first weeks of use!
We’re so confident you’ll love your results, we offer a 90-day, no-questions-asked refund, backed by our full refund policy.
Refunds are subject to our full refund policy.
