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The Hair Multiplier

Weightless Growth Serum

Visibly thicker, fuller hair in as little as 90 days. Powered by Swiss 7-Stem Concentrate®, seven alpine botanicals that extend your hair's natural growth phase. Refined to a weightless consistency that absorbs without residue.

Thickens hair by up to 94%*

Up to 3" of growth in 90 days*

No hormone disruptors

Absorbs instantly,

no residue

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Or 4 interest-free payments of $57 with Installment options
Order now for delivery by June 12, 2026

120 Day Money

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Made

in Switzerland

Dedicated Hair

Concierge Support

The Hair Multiplier® was designed for women aiming to grow longer, thicker, fuller hair without the weight of heavy oils.

Its ingredient composition is most effective for those with:

  1. Fine or thinning hair that lacks volume or density.

  2. Hair growth that has slowed or plateaued.

  3. Hair that has breakage before reaching its desired length.

The Hair Multiplier® is a nightly leave-in treatment designed to work in rhythm with your hair's natural growth cycle.

For your first month, we recommend applying 2mL of The Hair Multiplier® rather than 1mL.

Think of this as an awakening ritual. In these early weeks, the follicle is at its most receptive and most primed to respond, and this concentrated cadence is how we awaken the scalp and set the foundation for everything that follows.

After the first month, you'll transition to the standard once-nightly ritual to maintain and build on those results.

We call this The Awakening Phase. It is the single most important month of your journey with the formula.

Application:

  1. Apply 1mL to a dry or slightly damp scalp each evening.

  2. Press the pump 2–3 times to fill the dropper entirely.

  3. Apply directly to the scalp, focusing on areas of concern.

  4. Gently massage with fingertips to encourage absorption.

  5. Leave in and allow to dry naturally. Do not rinse.

  6. During your first month, repeat once more before bed to complete The Awakening Phase.

Results continue to develop over time. That's why all purchases are covered by our 120-day money-back guarantee. If you don’t love your results, we’ll gladly provide a full refund.

TIMELINE

What Happens in

The First 90 Days?

One minute. Every evening.

Visible renewal in as little as three months.

Month 1

Reset & Rebalance

From the first application, The Hair Multiplier begins to recalibrate the scalp, easing the inflammation and oxidative stress left by daily environmental exposure. As conditions stabilize, follicles become more receptive to the signals that drive growth. Much of this first phase happens beneath the surface, laying the foundation for the months ahead.

Month 2

New Density Begins

With the scalp now receptive, follicles begin to function at a higher capacity. Swiss 7-Stem Concentrate® strengthens the follicle structure and increases blood flow to active growth sites. At this stage, baby growth may become noticeable and hair can start to feel fuller and stronger as density returns.

Month 3

Extended Growth & Length

With continued use, Swiss 7-Stem Concentrate® helps prolong the anagen phase, keeping strands in active growth for longer. As growth continues uninterrupted, length builds and density becomes more visible.

TRY THE HAIR MULTIPLIER

120 Day Money-Back Guarantee

TESTIMONIALS

TESTIMONIALS

You're Allowed To

Feel Skeptical

These women were. Here's what they chose to document. Their timelines, in their own words.

Before

Month 0

After

Month 3

5.0 / 5.0

"I decided to give this serum a try and I’m SO glad I did!"

"Post-divorce my hair started falling out, and vitamins and proper nutrition alone weren’t cutting it. A year later and my hair wasn’t regrowing properly. I decided to give this serum a try and I’m SO glad I did! Don’t hesitate to try it. Before and after photos attached. Good luck with your hair journey!!"

"Post-divorce my hair started falling out, and vitamins and proper nutrition alone weren’t cutting it. A year later and my hair wasn’t regrowing properly. I decided to give this serum a try and I’m SO glad I did! Don’t hesitate to try it. Before and after photos attached. Good luck with your hair journey!!"

Results: Fuller middle part, thicker hair

— Amanda H. | 35-44 | Suffered with stress and postpartum-related hair loss

Before

Month 0

After

Month 3

5.0 / 5.0

"My hair used to stay around bra-strap length, but now it’s growing longer and looks healthier. I truly feel beautiful with my natural hair again."

"Cheap products always made my scalp red and irritated. This is the first time I spent more on a hair product after battling with years of hair loss due and age and stress. Conclusion: I'm happy I did. This works if you're very consistent. I've taken photos of my hair 3 months apart. I've noticed significant regrowth in areas that we once bare. There is also hardly any fallout in the shower anymore. I have a shower drain catcher so I can check. Even my hairdresser says it's a noticeable improvement. I've just began my 4th bottle now to keep the momentum going. Wonderful product. Will continue to buy and recommend to others."

"I started with one bottle, and after that I subscribed to receive a refill every three months. I am now finishing my third bottle after about two and a half months, and I can’t wait for my next refill to arrive.

I’ve noticed such a beautiful difference in my hair. It feels softer, shinier, and much stronger than before. I also feel like my hair is growing faster.

For many years I had blonde hair because I was covering my grey hair. Recently I decided to return to my natural color, and this product has been part of that journey. My hair used to stay around bra-strap length, but now it’s growing longer and looks healthier.

I truly feel beautiful with my natural hair again. I’m excited to continue this journey and keep using this brand."

Results: Gained length, hair feels softer and stronger

— Magdalena S. | 35-44 | Suffered with weak, brittle hair

Before

Month 0

After

Month 3

5.0 / 5.0

"I am finally feeling more confident and hopeful"

"I am EMOTIONAL over the results from using this product about 6 months. After ELEVEN YEARS, I am finally feeling more confident and hopeful. I have so much hair growing back in that it looks hilarious, sticking out all different directions. I am so incredibly grateful that I didn’t give up."

"I am EMOTIONAL over the results from using this product about 6 months. After ELEVEN YEARS, I am finally feeling more confident and hopeful. I have so much hair growing back in that it looks hilarious, sticking out all different directions. I am so incredibly grateful that I didn’t give up."

Results: Healthier hair growth, sparse patches filling in

— Alyssa W. | 25-34 | Suffered with hair thinning and shedding

Before

Month 0

After

Month 4

5.0 / 5.0

"I'm so happy I didn't quit...my hair is noticeably thicker"

"It actually works!!! This is the first time in my life I am writing a review about something because THIS WORKS. Not sponsored and not a paid review. These are around 75 days apart. My sides have nearly filled in plus my hair is noticeably thicker when I tie it up or run my fingers through it. Consistency is KEY, about 80% of the new hairs you're seeing didn't even appear until early month 3. Soo happy I didn't quit."

"It actually works!!! This is the first time in my life I am writing a review about something because THIS WORKS. Not sponsored and not a paid review. These are around 4 months apart. My sides have nearly filled in plus my hair is noticeably thicker when I tie it up or run my fingers through it. Consistency is KEY, about 80% of the new hairs you're seeing didn't even appear until early month 3. So happy I didn't quit."

Results: Thicker hair, improved hair density

— Elena M. | 25-34 | Suffered with unexplained shedding and thinning

RESULTS

Following

Daily Application

+94%

Reported visibly

thicker, fuller hair by week 6*

+90%

Saw a noticeable increase in length and hair softness by month 3.*

Noticeable improvements reported in the first

10 weeks

*Based on a self-reported 12-week consumer-use survey of 80 participants using The Hair Multiplier twice daily.

FORMULATION

Made To Mirror

Your Scalp Biology

Formulated for women, with ingredients your body recognizes, not resists.

Non-hormonal, with no disruptors or harsh additives

Balanced pH mirrors your scalp's natural environment.

Top 1% EWG

clean ingredients score.*

*Based on data obtained from the Environmental Working Group Skin Deep® ingredients scoring tool, Jan 2025.

No Sulfates (SLS/SLES)

No Parabens

No Phthalates

No Synthetic Fragrances

No Dyes

No Harsh Preservatives

No Animal Testing

INGREDIENTS

From 3,000 Metres

Above Sea Level

Born in the world’s most remote alpine environments, these botanicals endure where few species can.

Key Function

Supports scalp health and extends the active growth phase

Key Function

Strengthens scalp elasticity and reduces dryness and breakage

Key Function

Improves scalp health and makes hair appear visibly thicker and fuller

Key Function

Stimulates follicle activity and stops follicle shrinkage

Aqua (Water), Glycerin, Caffeine, Erythritol, Niacinamide (Vitamin B3), Potassium Sorbate, Lactic Acid, Sodium Benzoate (Gentle Preservative), Amaranthus Caudatus Seed Extract, Acetyl Tyrosine, Sodium Hyaluronate (Hyaluronic Acid), Zea Mays Starch, Chlorella Vulgaris/Lupinus Albus Protein Ferment, Leontopodium Alpinum Extract (Swiss Edelweiss), Gluconolactone, Glycine, Larix Europaea Wood Extract, Sodium Metabisulfite, Phenethyl Alcohol (Plant-Derived Preservative), Benzyl Alcohol (Non-Drying Natural Preservative), Phenoxyethanol, Caprylyl Glycol, Citric Acid (pH Adjuster), Camellia Sinensis (Green Tea) Leaf Extract, Zinc Chloride, Calcium Gluconate, Tocopherol (Vitamin E)

Subscription Terms

Easily skip, pause, or cancel anytime through your account or by emailing us at hello@lejardinswitzerland.com

By subscribing, you authorize Le Jardin Switzerland to charge your payment method $228 every 3 months starting today. Your subscription renews automatically until you cancel.

You'll receive a reminder email 3 days before each renewal. Full terms at Terms of Service.

Subscription Terms

Easily skip, pause, or cancel anytime through your account or by emailing us at hello@lejardinswitzerland.com

By subscribing, you authorize Le Jardin Switzerland to charge your payment method $388 every 6 months starting today. Your subscription renews automatically until you cancel.

You'll receive a reminder email 3 days before each renewal. Full terms at Terms of Service.

120 Day

Money-Back Guarantee

Results continue to develop over time. That's why all purchases are covered by our 120-day money-back guarantee. If you don’t love your results, we’ll gladly provide a full refund.

How to Apply

The Hair Multiplier

Apply directly to dry or damp scalp, focusing on problem areas.

Gently massage into the scalp. Leave in and allow to dry naturally and style as usual.

Frequently Asked

Questions

Most women notice less shedding within the first few weeks. Followed by softer, healthier-feeling hair by month one. Baby hairs and added density typically become visible by month two. From month three, visible length and ongoing growth can start to show.

Results compound. The women who see the most significant transformation are the ones who stay consistent, supporting their hair through its ongoing natural growth cycle.

The Hair Multiplier works with the female hair growth cycle, resuming healthy hair growth signals to increase length, density, and softness.

Its biologically compatible, 95% natural formulation is most effective for women with:

  • Thinning hair that lacks density or fullness

  • Hair that's plateaued or stopped growing

  • Hair that breaks before reaching your desired length.

When application is inconsistent, build-up and oxidative stress return. This signals to the follicle that the scalp environment isn’t suited to growth. Hair transitions out of active growth and into resting and shedding.

Most hair growth products coat the strand or force growth with synthetic ingredients. The Hair Multiplier works differently. It targets the scalp environment and follicle directly, restoring the conditions your hair needs for healthy ongoing growth. This is why women who have tried everything else are finally seeing results with The Hair Multiplier.

Yes. Apply the serum directly to your scalp every evening, focusing on the areas where you'd like to encourage new growth.

Because extensions can place extra tension on fragile strands, we recommend gentle, low-tension styles while your hair strengthens. New hair is at its most delicate as it grows, so treat it with care.

No. The Hair Multiplier's weightless consistency absorbs into the scalp in seconds and leaves behind no residue. This means you can apply the formula daily without washing more often or hair becoming heavy or oily.

Yes. The Hair Multiplier® is ideal for those with compromised hair. Formulated with pure alpine botanicals, selected for their strengthening and restorative properties, its bioactive ingredients repair weakened strands, revitalize dormant follicles, and restore a healthy growth environment, leading to reduced breakage and revealing visibly healthier hair.

The Hair Multiplier® is fragrance-free and contains no synthetic perfumes to prevent scalp irritation.

Some women notice a slight, temporary increase in shedding in the first few weeks. This is usually a small portion of resting hairs completing their natural cycle and releasing, making room for new, stronger strands to form.

Meanwhile, the rest of your hair continues to strengthen and thicken in its active growth phase. Think of it as a gentle reset of the growth cycle: the hairs that release are gradually replaced by healthier, more resilient ones.

The Hair Multiplier® is plant-based and non-hormonal, formulated without minoxidil, finasteride, or hormonal actives. Many of our customers first come to us during the postpartum stage, when shedding is especially common, and use it to support their hair through that transition. That said, every pregnancy is different, and we can't make individual medical recommendations. If you're pregnant, breastfeeding, taking medication, or managing a health condition, please check with your doctor before use.

Swiss 7-Stem Concentrate®

The result of years of research into alpine botany and the biology of human hair, our proprietary complex blends seven rare alpine botanicals, scientifically proven to support hair health and encourage natural growth.

Origin

The principal botanical, the Matterhorn Edelweiss, blooms on the rocky slopes of the Matterhorn mountain. For centuries, the peak stood untouched, a fatal pursuit for mountaineers. Where human endurance falters, the Edelweiss Flower endures. To survive, it developed exceptional self-repair and protection systems, producing high concentrations of antioxidants and phytonutrients.

Function

Edelweiss Flower is scientifically proven to extend the hair’s active growth phase by energizing follicle cells and preserving collagen integrity. Naturally abundant in antioxidants and vitamins A, C, and E, it protects the scalp from UV and environmental stress while reinforcing follicle structure to reduce breakage and support lasting growth.

Effect

The hair’s growth cycle is restored and new growth is shielded from external stressors, revealing stronger, healthier, and visibly longer hair.

Amaranth Seed Extract

One of the world’s oldest cultivated grains, Amaranth Seed Extract combines ancient botanical wisdom with modern bioactive science to support strand integrity and improve hair health for continuous growth.

Origin

Known as the Velvet Flower, Amaranth Seed Extract was rediscovered in the 1880s after five centuries of obscurity. Amaranth was once a sacred staple of Aztec and Incan civilizations before its cultivation spread across Asia, Africa, and Europe. Today, it is valued worldwide for its rich bioactive profile and deeply restorative properties.

Function

Amaranth Seed’s lightweight molecular structure penetrates deeply without irritation, replenishing the hair’s natural protein and repairing weakened strands. Rich in squalene and essential fatty acids, it locks in moisture, strengthening scalp elasticity and enhancing nutrient absorption to reduce dryness and breakage.

Effect

Hair appears visibly healthier and fuller with the strength and vitality to support new, continuous natural growth.

Bio-Fermented Hyaluronic

Acid

Capable of holding 1,000 times it's own weight in water, hyaluronic acid binds moisture to the skin and hair, improving elasticity and scalp health while making hair visibly thicker and fuller.

Origin

Naturally bio-fermented in Switzerland using plant-based substrates before being purified at low temperatures to preserve molecular integrity. This process allows for precise control of molecular weight, creating a lower-weight HA that penetrates deeper to enhance hydration and improve absorption.

Function

Long, chain-like molecules bind water and bioactive nutrients to hyaluronic acid, allowing deep absorption into the scalp’s protective barrier. This ensures every element of the formula is activated while hydrating the scalp to sooth irritation, prevent follicle damage, and plump strands.

Effect

Restores the scalp’s natural growth environment by maintaining a healthy barrier and strengthens existing strands so hair appears thicker and fuller.

Alpine-Purified Caffeine

A natural growth stimulant, caffeine extract energizes follicles and extends the hair’s natural growth phase.

Origin

Harvested from organic green coffee plants grown in high-altitude microclimates. These alpine environments slow the ripening process and enhance drainage, producing higher-quality beans with greater concentrations of bioactive compounds.

Function

Caffeine promotes hair growth by improving scalp health and stimulating follicle activity. It boosts blood circulation to deliver oxygen and nutrients essential for growth, while antioxidant properties protect against environmental damage. By blocking DHT, the hormone responsible for follicle shrinkage, and supporting ATP production and IGF-1 expression, it ensures hair remains in its active growth phase longer.

Effect

Stimulates natural growth, resulting in visibly longer, stronger hair that’s protected from and more resilient to damage.