Lightweight & fast-absorbing — non-oily, non-sticky formula
Apply every 2–3 days — no daily commitment required
Clean & drug-free — no silicones, parabens, colors, or perfumes
Science-backed — built on 34 years of research and 100,000+ clients
Loading Showcase
34 years ago, Lars Skjøth began exploring natural, drug-free alternatives to conventional hair loss treatments, studying botanicals, hair and scalp biology, and dermatology along the way.
Since then, Hårklinikken has become a pioneer in the hair and scalp industry, and led to our award-winning, customized Hair Gain Extract formula which helped transform over 100,000 clients in their personal hair journey to achieve healthier, fuller looking hair.
That scientific foundation and in-clinic experience brought us to this point: HXC-4 Hair Extract Serum, a single formula, already studied in a clinical trial with observed results in hair gain and density. We've distilled the core benefits into this HXC-4 Hair Extract Serum formulation, for a science-led approach to hair and scalp health with a more convenient point of entry.
"Taking the clinical observations and learnings of the success of the original Hair Gain Extract across 100,000+ clients, we've distilled the core benefits into this formulation — for an efficacious, science-led approach to hair growth."
LARS SKJØTH
HÅRKLINIKKEN FOUNDER & LEAD RESEARCHER
Our Clinical Trial Results
92%
noticed improvement in hair volume
92%
noticed improvement in hair quality
100%
noticed less hair shedding
83%
reported more coverage in the temples
75%
reported more density in their crown and hairline
100%
reported more density in their parting
100%
noticed improvement in scalp issues such as redness, itchiness, flakiness, and dryness
100%
noticed less hair shedding
100%
noticed improvement in speed of hair growth
100%
noticed improvement in hair volume and density
100%
noticed improvement in the quality of their hair
100%
noticed more density in parting, temples, and crown
100%
noticed improvement in scalp issues such as redness, itchiness, flakiness, and dryness
100%
of past product users rated HXC-4 Hair Extract Serum as more effective
-
30 DAYS
Better scalp health; improved shine, volume, and softness
-
60 DAYS
Noticeable improvement in hair density and coverage
-
90 DAYS
Increased hair density, quality, and growth.
*Based on results from a 120-day in-clinic consumer study of the HXC-4 Hair Extract Serum. Results may vary; based on clinical observation data
HXC-4 Key Ingredients
-
Our apple extract complex contains constituents that act on cellular pathways involved in hair follicle activity, including protein kinase C (PKC) signaling. This activity may support the proliferation of hair epithelial cells and encourage the transition into the anagen, or active growth, phase of the hair cycle. These mechanisms play an important role in hair cycle progression and the biological processes associated with hair growth. Within the Extract, the apple complex works alongside the other constituents to support a healthy environment for hair growth.
-
Burdock root contains polysaccharides such as inulin, along with phenolic compounds, tannins, sterols, amino acids, vitamins, and minerals. Our proprietary extract serves as a cleanser while providing anti-inflammatory, antibacterial, and antifungal properties that support a healthy scalp environment. These properties may help reduce inflammation around the hair follicles and maintain a balanced scalp microbiome.
-
Our unique Calendula Officinalis Extract complex is primarily used as a conditioning and soothing agent, helping to calm and support the overall condition of the scalp. It contains oleanolic acid glycosides and triterpene alcohols associated with anti-inflammatory and soothing properties. Flavonoids such as quercetin and isorhamnetin also contribute antioxidant and anti-inflammatory activity, while volatile oils provide antimicrobial properties. Together, these constituents help create a healthier, less irritated scalp environment.
-
Our milk-derived complex is a proprietary system that has taken more than two decades to develop and refine. Its constituents are designed to work synergistically with other ingredients in the formula, while supporting balance within the scalp microbiome. The complex also functions as a delivery mechanism, helping other active constituents work effectively within the formulation. Its unique combination of functions makes it an important part of the Extract’s overall approach to scalp and hair health.
How to Use
-
Part your hair cleanly down the middle. Starting at the hairline, place small dots of serum along the part, moving gradually toward the crown. Aim for two dots per section, spaced approximately two inches apart.
-
Work across the scalp in rows about half an inch apart, ensuring even coverage of the top, sides, and crown.
-
After completing each row, use your fingertips to gently rub the serum into the scalp to ensure proper absorption.
-
Once all serum is applied, slide your fingers beneath the hair and place them firmly on the scalp. Using a gentle squeezing motion, massage the entire scalp for at least one minute (up to five), repositioning your fingers every 10–15 seconds.
-
Leave the serum on for a minimum of six to eight hours before washing for optimal effect.
A 58 ml bottle lasts approximately 1 – 3 months. If used daily, it lasts around 20 days; 40 days if used every second day; 70 days if used twice a week.
The Hårklinikken Method
The Hårklinikken Method works by creating the ideal environment for hair growth, optimizing conditions both on the scalp and within the hair follicle.
For optimal results, the HXC-4 Hair Extract Serum must be paired with our gentle yet effective cleansers that serve as an essential part of the method working in synergy with the topical product applied.
Our hydrating products are not just products free of color, perfume, silicone, and parabens, but are also pivotal for delivering optimal results in hair quality, strength, and shine.
LIGHTWEIGHT
NON-GREASY
FAST-ABSORBING
