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Three bottles of Alpecin Caffeine DMG Shampoo on a white background
Alpecin shampoo and serum bottles on a white background

Caffeine DMG Shampoo

Patented formula: active complex with caffeine + dimethylglycine (DMG)

  • Reduces hair loss* 
  • Supports hair growth*
  • Thicker, fuller & denser hair*
  • Use daily & leave on for 2 minutes
  • Optimal results after 3-6 months of daily use*
£20.00200 ml (£10.00 / 100 ml) • including VAT, plus shipping

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Delivery time: 2-4 working days

Free delivery on orders over £35

Aqua, Sodium Laureth Sulfate, Laureth-2, Citric Acid, Disodium Laureth Sulfosuccinate, Sodium Lauroyl Glutamate, Sodium Dimethylglycinate, Caffeine, Panthenol, PEG-120 Methyl Glucose Dioleate, Sodium Chloride, Sodium Citrate, Propylene Glycol, Menthol, PEG-40 Hydrogenated Castor Oil, Polyquaternium-7, Disodium EDTA, Zinc PCA, Niacinamide, Sodium Benzoate, Potassium Sorbate, Parfum, CI 42090

Microscopic image of the smallest blood vessels surrounding the left part of a hair root, symbolising the effect of DMG on the micro-circulation of the scalp and its impact against hereditary hair loss in men.

How it Works: DMG promotes the micro-blood-circulation of the scalp**, and hair loss is effectively reduced*.

Microscopic image of the smallest blood vessels surrounding the right part of a hair root, symbolising the effect of DMG on the micro-circulation of the scalp and its impact against hereditary hair loss in men.

Micro-blood-circulation is the foundation for healthy hair growth

In areas affected by hair loss, this can be reduced to below 40%.

This is where DMG comes in: its mode of action, comparable to Minoxidil, promotes micro-blood-circulation** and the hair roots are once again supplied with nutrients.

Microscopic image of a hair root in brown and blue, intended to symbolise the effect of the Alpecin Caffeine Complex

Additionally, caffeine stimulates the hair root

Caffeine has been known for over 20 years for its stimulating effect on hair roots. It inhibits the breakdown of the intracellular messenger cAMP. As a result, more energy is available to the cells and cell growth is stimulated.

Caffeine is thus one of the most researched active ingredient of plant origin in hair science.

Part two of a tripartite depiction showing a microscopic view of a hair root.

Caffeine + DMG: Even more effective when combined

Individually, caffeine and DMG are already highly potent active ingredients. In Alpecin's unique, patented active complex, they are now even more powerful.

The result: Hereditary hair loss is now effectively reduced and hair growth** can be increased.

Micro-blood-circulation of the scalp

A circular heatmap of a head, predominantly in blue with a small central yellow and red area, shows intensity variations of micro-circulation against a dark blue background.

BEFORE application:

A circular heatmap of a head with vibrant red, yellow, and blue tones shows intensity variations of micro-circulation against a dark blue background.

AFTER application:

Measurement of micro-blood-circulation before and after using Alpecin Caffeine DMG Shampoo (Vertical head scan with a special laser camera for measuring blood flow).

Application: This is the only way to achieve the best result

  • Apply daily

  • Leave on for 2 minutes

  • Use continuously to maintain results

  • Tip – No time to shampoo your hair?
    Use the Serum on non-wash days.

Effectiveness depends on individual metabolism. 74% of study participants noticed thicker, denser, and fuller-looking hair after 6 months of use.
ESzW

Dr. Erik Schulze zur Wiesche

Head of Research & Development

Clinical Study: Reduction in hair loss* demonstrated in 92% of participants

The graph shows the results of the hair pull test over time, comparing "Caffeine + DMG" with "Placebo." The test group decreases, while the control group increases. The X-axis marks the days, and the Y-axis shows the mean values with confidence intervals.

Double-blind, randomised, and placebo-controlled study:

24-week, randomised, double-blind, placebo-controlled study in 154 men using the shampoo daily. Participants used either the DMG shampoo (verum) or a placebo. The primary endpoint—a standardised shedding test —showed fewer hairs shed vs placebo at weeks 12 and 24.

Hair growth can be supported*

Three close-up shots of skin show hair growth at intervals: "Day 0," "Day 84," and "Day 168." Each image displays different hair density on a similar skin surface.
Phototrichogram: Clinical tests conducted at Eurofins Cosmetics & Personal Care Italy.

In a study subgroup, hair density increased and more hairs were in the growth phase by Week 12 & 24*:

Read the full study

Also available as a serum

New: Caffeine DMG Serum

Ingredient complex of Caffeine + DMG (dimethylglycine)

  • Reduces hair loss*  

  • Supports hair growth* 

  • Thicker, fuller & denser hair* 

  • Use daily, massage in and do not rinse out

  • Optimal results after 3-6 months of daily use*

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Caffeine DMG Shampoo + Serum Bundle

Our bundle consists of 2x shampoo and 1x serum and is the perfect combination to ensure your daily dose of Caffeine DMG.

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Measurement Method

Bird's-eye view of a man's head with a grid displayed on it, illustrating the point that a large portion of the hair was examined in the study participants.

Measurement method: First-time evaluation of more than 10,000 individual hairs

Focus on a screen showing a close-up of hair to highlight that Dr. Wolff, together with the Fraunhofer Institute, has developed a new method to analyse hereditary hair loss in men.

In collaboration with the Fraunhofer Institute, Dr. Wolff Research has now taken a systematic approach to hair loss* and conducted a comprehensive analysis of the human scalp.

Whereas previous studies examined areas with only around 300 hairs, our new method, which evaluates more than 10,000 hairs per head, provides precise results:

"The new DMG complex is shown to reduce hair loss* and, in some cases, support new hair growth.*"

Video: The Alpecin Story

The OMR Original takes a look behind the scenes at Alpecin and shows how a chance discovery in the lab, the courage to make radical decisions, ambitious goals, and unconventional marketing paved the way for Alpecin to become the leading – and often copied – expert in caffeine-based hair care.

View full story

FAQ: Answers to your questions

Already after 3 month of regular use, hair gets visibly thicker and fuller.

As a scientifically oriented company, Dr. Wolff places the highest value on sound research and evidence-based statements. We are currently a pioneer in the field of topical application of N,N-dimethylglycine (DMG). To generate valid and objective data, we rely on a high-quality study design. Our investigations – for example into the Alpecin Caffeine-DMG products – were therefore conducted in a placebo-controlled, randomised, and double-blind manner. A brief explanation of these terms:

  • Placebo-controlled: One group receives the active ingredient formulation, another receives a placebo. This allows the actual effectiveness to be assessed objectively.
  • Randomised: Allocation to the groups is made at random in order to avoid systematic bias.
  • Double-blind: Neither the study participants nor the technical staff know who is receiving which treatment, ensuring unbiased results.

They shampoo should be used daily to ensure best results. Please note the required exposure time of 2 minutes.

* 24-week RCT in men (n=154; daily use): standardised testing showed fewer hairs shed vs placebo at weeks 12 and 24; subgroup and consumer findings support higher density/growth-phase hairs and fuller-looking hair at 6 months. Hair loss not related to illness. Results vary. 

** Clinical study with 1% DMG-Na Gel evaluating skin microcirculation at the forearm after 30-90 minutes vs control. Results vary.