FAQ Shampoos & SerumsFAQ Shampoos & Serums: Frequently Asked Questions about our Products

After just 3 months of regular use, clinical studies have shown a significant reduction in hereditary hair loss.

For a successful anti-hair loss routine, consistent daily use for 2 minutes a day is required.

You can easily combine the Caffeine DMG Shampoo and the Caffeine DMG Serum, but it's not absolutely necessary to use both products at the same time.

What's crucial is that your hair and scalp receive a daily dose of DMG + Caffeine.

We recommend using the shampoo on days when you wash your hair and the serum on days when you don't.

No, the effectiveness of Alpecin Caffeine DMG Shampoo is primarily focused on the hair roots and is independent of hair length. Depending on the hair length, additional hair care should be applied.

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, randomized, 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.
• Randomized: 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.