Thymuskin - CLASSIC Shampoo - Sample Kit


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What is Thymuskin?

For more than 30 years, Thymuskin® has been successfully used to fight against thinning hair and was used to not only nourish, reinforce, and strengthen the hair, but also provide essential nutrients for general hair care, all leading to noticeably thicker hair.


  • Contains the GKL-02 active complex for universal hair thinning problems.
  • The Bestseller - Used in most clinical studies.
  • For both Men and Women of all ages.
  • Strengthens immune defense & rejuvenates the hair follicle.
  • High level of premium hair care properties and ingredients.
  • No side effects & Silicon Free, Paraben Free, and Bovine Free.
  • Classic Shampoo and Serum available for 2-step system. 

What makes THYMUSKIN® unique is the biologically active agent GKL-02, as it inhibits various enzymes that play a key role in hair treatment. Harmful DHT are potentially blocked, which can reduce the dying of hair follicle cells. Furthermore, THYMUSKIN® activates and proliferates the keratinocytes in the hair matrix; the basic substance of each hair. Read Thymuskin FAQsIt promotes the formation of new hair cells and strengthens the existing hair follicles.


THYMUSKIN® also includes active ingredients such as caffeine, vitamin E and Urtica dioica which provide additional caring and nurturing functions. Also included are cosmetic ingredients such as Panthenol or plant & wheat proteins, which form a group providing hair care properties. Due to its effective active ingredient, no side effects, and its studied results, THYMUSKIN® is continuously recommended by dermatologists, pharmacists and salon owners.


  • Enhancement of cell vitality - THYMUSKIN® increases the cells in the hair matrix, as well as the viability and vitality of human kerationocytes which are greatly involved in producing the root substance of the hair.
  • Growth stimulation through thymic peptides - An independent study recently presents evidence that selected thymic peptides operate as direct modulators of human hair follicle growth. (Meier N et al.: Thymic Peptides Differentially Modulate Human Hair Follicle Growth 2012)
  • Prolongs growth phase by Inhibition of 5alpha reductase and further enzymes - THYMUSKIN® impairs the main enzymes which have been shown to play a major role in the transition of the anagen to the katagen and telogen phases of the hair growth cycle. Harmful 5alpha reductase is being blocked too.

Clinically Proven

THYMUSKIN® is actively engaged in scientific research with positive results found by dermatological clinics and university hospitals. The good tolerability and cosmetic acceptance have been repeatedly approved within controlled scientific observational studies and through investigations carried out by German and international skin clinics and university hospitals.

For example, during a recent observational study by Dr. Barbareschi, the efficacy and safety of THYMUSKIN® in was tested by 364 participating patients over a period of six months. In addition to a significant reduction of hair loss, a positive tolerability was reported in 100% of the cases and no side effects were reported. Furthermore, a positive cosmetic acceptance / tolerance could be approved in 98% of all cases*.

THYMUSKIN® is proud to be partnered with a variety of clinics, universities and teaching hospitals:

  • Academic Teaching Hospital of the Universities of Frankfurt and Heidelberg
  • City Hospital of Vienna-Lainz, Austria
  • Ruprecht-Karls-University Heidelberg
  • University of Münster Medizinische Akademie Hannover
  • Medical Hospital of the Technical University Munich
  • German Cancer Research Centre Heidelberg
  • Dermatology Unit, University of Milan, Italy