Test regarding the penetration of caffeine from the caffeine-containing shampoo formula by Plantur 39
Conducted at the Center for Experimental and Applied Cutaneous Physiology and Clinical Research Center for Hair and Skin Science at the Charité University Clinic, Berlin
Surveillance Study Plantur 39 Caffeine Tonic
Conducted at the Clinic for Dermatology and Dermatological Allergology of Friedrich Schiller University, Jena
Surveillance Study Plantur 39 Outside-Inside Treatment
Conducted during the hair clinic sessions at the practice of adjunct professor Dr. med. Gerhard Lutz, Bonn-Wesseling