Innovation And Kindness For Hair: Tangle Teezer Launches Extra Gentle – The Brush That Supports Hair Health With Science And Softness April 2025 in “ Brazilian Journal of Hair Health ” Rogério Sartini We don't know much about this study yet. We're maintaining the world's largest resposity of hair loss research. You can help out the community by sending a PDF of this study here . Not sure how to get a study's PDF? You can email the authors of the study. View this study on brazjhairhealth.com →