Czech Republic
Slovakia
REDENSYL® Hair Booster – Hair Growth & Strengthening Serum
155 ml
Code 437507
Up to 28,200 new hairs are within reach.
Discover our unique hair serum for thicker and more radiant hair and begin an intensive 3-month treatment inspired by the power of nature. The effects are verified by clinical studies. The growth serum is designed for both women and men concerned with hair loss, reduced density and weakened roots. The lightweight, high-performance and concentrated formula stimulates the growth of new hair, strengthens follicles and restores volume, vitality and natural radiance. Featuring the patented Redensyl® complex within the modern BEER BEAUTY concept, the formula targets the scalp and follicles, i.e. exactly where hair life begins.
32,00 €
20,65 € / 100 ml
in stock
You can have it on 18. 9. 2026
Buy 3 Get 1 Free
to favourite hair serum
The special offer refers to Beer activating hair serum and Rose activating serum. Put 4 products to the shopping basket and get one free of charge.
Ingredients of natural origin
Cruelty Free International Certified
100% vegan ingredients
REDENSYL® Hair Booster – Hair Growth & Strengthening Serum
Product description
What are its key benefits?
- Stimulates the growth of up to 28,200 new hairs
- Supports Hair Longevity by helping to slow the ageing process of the scalp and protect it against premature hair thinning
- Enhances hair strength and thickness by 10-20%
- Reduces hair loss
- Promotes regeneration
- Has a lightweight fixing effect
- Soothes the scalp
- Reduces dandruff and dryness
What does it contain?
- 98% ingredients of natural origin
- Patented Redensyl® complex featuring larch and green tea extracts to reactivate stem cells of hair follicles, promoting growth and reducing loss
- Ferdinand authentic Czech beer – a unique ingredient with a long history, rich in B vitamins and minerals, features Vital hop species, which is specifically cultivated for pharmaceutical and biomedical use
- Rosemary extract – an evidence-based natural stimulant of hair growth and a current trend in scalp care
- Natural caffeine actively impacts hair follicles, extending their life and stimulating growth
- Emollient and regenerating barley and hops extracts
- Creatine that revitalises, hydrates and adds visible volume
- Hydrating LactoComplex and lactic acid
- 0% parabens, silicones or sulphates
Who is it for?
- Both women and men experiencing hair loss
- Fine, weakened hair lacking density and volume
- Those experiencing hair loss due to stress
- Anyone seeking a targeted scalp treatment
How to use it?
If you wash your hair every day, apply to dry hair after washing.
Use consistently to see the benefit of up to 28,200 new hairs!
Award
The product won 2nd place in the Cosmopolitan Beauty Awards 2026 competition in the category POPULAR Best Hair Serums & Scalp Treatments.
The award is the result of voting by readers of Cosmopolitan magazine and is given to the best cosmetic products of the year.
Frequently asked questions
Can the serum help with seasonal hair loss?
While designed mostly for long-lasting hair loss, the serum is also highly effective for seasonal shedding or scalp stress.
How long does it take to see results?
Due to the natural hair cycle, the first visible results typically appear within a few weeks. For optimal results, a full three-month treatment is recommended.
Does the serum weigh hair down?
No. The lightweight texture absorbs quickly without leaving a greasy residue or weighing hair down.
Is the serum suitable for sensitive scalp?
The serum was developed with a focus on safety and promotion of natural scalp balance. If you have very sensitive scalp, we recommend a local tolerance test before the first application.
How does the serum work?
Losing up to 100 hairs per day is normal, because hair grows in cycles, i.e. a hair grows for some time and then falls out. The follicles remain without hair for a short time before a new hair starts to grow. Besides strengthening and enhancing hair growth, this serum shortens the dormant phase – the period when hair follicles are empty - which results in visible hair thickening. Redensyl reactivates the hair follicles, shortening this dormant phase while, conversely, prolonging the growth phase.
Do the beer cosmetic products contain real beer?
Yes. Our Hair Booster contains authentic beer brewed from the special Vital hops species from Žatec, developed specifically for pharmaceutical and biomedical use. We use beer in the form most appropriate for each product’s texture.
In our creams, balms and other emulsion products we use a beer extract to maintain all the nourishing properties within a creamy consistency.
Words from our development department
"The Patented Redensyl® complex is a unique ingredient that reactivates stem cells of hair follicles, promotes hair growth and reduces hair loss. It can ensure up to 28,200 new hairs and boost hair strength and density by 10-20%. The combination of authentic Czech beer - traditionally valued in haircare – with modern cosmetic development and local tradition results in a harmonious product providing hair with a feeling of strength and overall comfort."
Ing. Martin Homolka – Development Manager
Ingredients
98 % ingredients of natural origin
Beer
Czech beer contains many minerals, vitamins B and antioxidants, provides hair with a healthy look, volume and shine, helps regenerate, contributes to rejuvenation, soothing and softening of the skin.
Redensyl® complex
Clinical tests revealed increase in the number of hairs (up to 28,200 hairs in 84 days) due to the unique natural complex from the larch and green tea. It reactivates growth of hair, reduces its loss, thickens and strengthens hair, soothes scalp and increases volume.
Caffeine
Caffeine is a popular natural ingredient. It stimulates hair follicles, promotes hair growth, increases blood circulation in scalp and helps reduce hair loss. It has anti-oxidant effects in skin care, reduces swelling and improves elasticity.
Rosemary extract
Rosemary extract is an exceptional natural ingredient, which activates hair roots, prevents hair loss and improves blood circulation in scalp. It supplies hair with shine and strengthens it, which prevents brittle and split hair.
Composition
Aqua, Glycerin, Beer, Humulus Lupulus Extract, Larix Europaea Wood Extract, Arnica Montana Flower Extract, Hordeum Vulgare Seed Extract, Hypericum Perforatum Flower Extract, Juniperus Communis Fruit Extract, Panax Ginseng Root Extract, Rosmarinus Officinalis Leaf Extract, Salvia Officinalis Leaf Extract, Urtica Dioica Leaf Extract, Camellia Sinensis Leaf Extract, Creatine, Caffeine, Lactic Acid, Sodium Lactate, Sodium PCA, Glycine, Fructose, Inositol, Niacinamide, Urea, Panthenol, Maltodextrin, Beta-Glucan, Propylene Glycol, Zinc Chloride, Sodium Benzoate, Potassium Sorbate, Sodium Metabisulfite
Integrated care
Beer cosmetics
Complement your cosmetic ritual by integrated care of body, hair and face and discover a new dimension of beauty and joy from nature.
Reviews (88)
I am very satisfied because the quality of my hair has improved since I have been using the serum regularly - I am buying my third one. My hair is stronger, thicker and looks much healthier, I also use rosemary oil in combination with the serum and the change is noticeable.
Visitor reviews
I've been using it for about 2 weeks and my hair is shinier, stronger, my scalp has also improved significantly and is calmer, it doesn't itch. I'll see if I have more hair later. For me, I'm satisfied.
ConsIt doesn't smell at all to me, but the shine of my hair and the soothed scalp balance it out.😉
Visitor reviews
For me, about half... My hair still falls out, but it's stronger. I'm still thinking about a second pack.
Buyer reviews
