Aging Hair
“Aged? But he does not appear aged, just look, his hair has remained young!” Marcel Proust, In Search of Lost Time (1913–27) The appearance of hair plays an important role in peoples’ overall physical appe- ance and self-perception. With today’s increasin
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Ralph M. Trüeb Desmond J. Tobin (Eds.)
Aging Hair
Desmond J. Tobin, PhD Professor Centre for Skin Sciences School of Life Sciences University of Bradford Bradford West Yorkshire BD7 1DP, UK [email protected]
Ralph M. Trüeb, MD Professor Department of Dermatology University Hospital of Zürich Gloriastr. 31 8091 Zürich Switzerland [email protected]
ISBN: 978-3-642-02635-5
e-ISBN: 978-3-642-02636-2
DOI: 10.1007/978-3-642-02636-2 Springer Heidelberg Dordrecht London New York Library of Congress Control Number: 2009938028 © Springer-Verlag Berlin Heidelberg 2010 This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer. Violations are liable to prosecution under the German Copyright Law. The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. Product liability: The publishers cannot guarantee the accuracy of any information about dosage and application contained in this book. In every individual case the user must check such information by consulting the relevant literature. Cover design: eStudio Calamar, Figueres/Berlin Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com)
Preface
“Aged? But he does not appear aged, just look, his hair has remained young!” Marcel Proust, In Search of Lost Time (1913–27) The appearance of hair plays an important role in peoples’ overall physical appearance and self-perception. With today’s increasing life-expectation, the desire to look youthful plays a bigger role than ever. The hair care industry has become aware of this, and capable to deliver active products that are directed toward meeting this consumer demand. The discovery of pharmacological targets and the development of safe and effective drugs such as minoxidil and finasteride also indicate strategies of the drug industry for maintenance of healthy and beautiful hair in the young and old. The study of hair aging focuses on two main streams of interest: On the one hand, the esthetic problem of aging hair and its management, in other words everything that happens outside the skin; on the other hand, the biological problem of aging hair, in terms of microscopic, biochemical, and molecular changes, in other words the “secret life” of the hair follicle in the depth of the skin. Hair aging comprises hair shaft aging, and aging of the hair follicle. The former involves weathering and photoaging of the hair shaft, w
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