Human hair is the subject of a remarkably wide range of scientific investigations. Its chemical and physical properties are of importance to the cosmetics industry, forensic scientists and to biomedical researchers. The fifth edition of this book confirms its position as the definitive monograph on the subject. Previous editions were recognized as “concise and thorough” (Journal of the American Chemical Society), “an invaluable resource” (Canadian Forensic Science Society Journal), and “highly recommended” (Textile Research Journal). Chemical and Physical Behavior of Human Hair is a teaching guide and reference volume for cosmetic chemists and other scientists in the hair products industry, academic researchers studying hair and hair growth, textile scientists and forensic specialists. Features of the Fifth Edition: Recent advances in the classification and characterization of the different proteins and genes in IF and keratin associated proteins in human hair are described. The mechanism and incidence of hair growth and loss and hair density vs. age of males & females are described for Asians, Caucasians and Africans in different scalp regions. Details of hair surface lipids and cuticle membranes provide a better understanding of the surface and organization of the CMC and its involvement in stress strain is presented. Recent evidence demonstrates a more bilateral structure in curly hair and a more concentric arrangement of different cortical proteins in straighter hair. SNPs involved in hair form (curl and coarseness) and pigmentation and genes in alopecia and hair abnormalities are described. The latest biosynthetic scheme for hair pigments and structures for these and the different response of red versus brown-black pigments to photodegradation is described. A new method for curvature on 2,400 persons from different countries and groups is used to assign curvature throughout this book. Additional data for age and effects on diameter, ellipticity, elastic modulus, break stress and other parameters are presented with much larger data sets featuring statistical analyses. Hair conditioning, strength, breakage, split ends, flyaway, shine, combing ease, body, style retention, manageability and feel parameters are defined and described. A new section of different life stages by age groups considering collective and individual changes in hair fiber properties with age and how these affect assembly properties.

“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 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 c- sumer demand. The discovery of pharmacological targets and the development of safe and effective drugs such as minoxidil and fnasteride 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, while the latter manifests as decrease of melanocyte function (graying) and decrease in hair production (alopecia).

Natural products play crucial roles in modern drug development, and constitute a prolific source of novel lead compounds or pharmacophores for ongoing drug discovery programs. Chemistry and Pharmacology of Naturally Occurring Bioactive Compounds presents cutting-edge research in the chemistry of bioactive natural products and demonstrates how natural product research continues to make significant contributions in the discovery and development of new medicinal entities. In 21 chapters, this book highlights chemistry and pharmaceutical potential of natural products in modern drug discovery processes, and covers the synthesis and semi-synthesis of potentially bioactive natural products. Written for phytochemists, synthetic chemists, combinatorial chemists, as well as other practitioners and students in related fields, the book features chemical advances in naturally occurring organic compounds and describes their chemical transformations and structure–activity relationships.

Human hair is the subject of a wide range of scientific investigations. Its chemical and physical properties are of importance to the cosmetics industry, forensic scientists, and to biomedical researchers. This updated and enlarged fourth edition continues the tradition of its predecessor as being the definitive monograph on the subject. It now contains new information on various topics including: chemical hair damage, the cause of dandruff, skin and eye irritation, hair straightening, and others. Chemical and Physical Behavior of Human Hair is a teaching guide and reference volume for cosmetic chemists and other scientists in the hair products industry, academic researchers studying hair and hair growth, textile scientists, and forensic specialists.

You could read every textbook available on hair growth and disorders, and still not be able to treat hair loss effectively. In every art, there are many techniques, but few principles. The only way to achieve success is to have a firm foundation of principles to build upon, and the right attitude about how to achieve your goals. This book offers a detailed guide that goes beyond the technical aspects of trichology and evidence based medicine, providing specialists and primary care physicians experienced in the basic management of hair loss with the additional know-how they need to master the ultimate challenge of difficult hair loss patients. First, the prerequisites for successful management of hair loss are reviewed – basically, making a diagnosis and understanding the patient and his or her problem. Then, guidelines on the management of difficult dermatologic conditions and of psychopathological disorders associated with hair loss are provided. Lastly, important aspects of follow-up are covered–specifically the problems of adverse effects, patient non-compliance, and their management–before concluding with exemplary case studies of successful treatment of alopecia and related conditions.

Master the latest medical and cosmetic procedures with Surgery of the Skin, the most comprehensive dermatological surgery resource available. Written from the surgeon's perspective, this medical reference book features step-by-step guidance on performing the most updated developments and cutting edge approaches across the entire spectrum of dermatologic surgery. - Improve surgical results and avoid pitfalls with expert, evidence-based guidance. - Stay on the cutting edge with in-depth step-by-step descriptions of tumescent vertical vector facelifts, blepharoplasty, composite grafts, Botox treatments, soft tissue augmentation, management of dysplastic nevi and melanoma, and more. - View immersive videos from an expanded library with more than 130 clips totaling over six hour's footage. - Explore brand-new chapters on rejuvenation of the female external genitalia; hidradenitis suppurativa; and photoaging-related mottled pigmentation. - Improve treatment outcomes for patients with skin of color and gain a truly global perspective of dermatologic surgery through an expanded contributor group of leading international experts. - Master how to perform cutting-edge techniques across the entire spectrum of dermatologic surgery, including botulinum toxins; fillers; cryosurgery; flaps; grafting; scar revisions; lasers; face-lift techniques; blepharoplasty techniques; Mohs surgery; and more. - Effectively manage a full range of complex disorders, such as vitiligo surgery, keloids, and leg ulcers, with a unique section devoted to these special procedures. - Easily visualize complex procedures and concepts with more than 1,000 illustrations, photos, and graphics. - Expert Consult eBook version included with purchase. This enhanced eBook experience allows you to search all of the text, figures, references, and videos from the book on a variety of devices.

This book is a comprehensive but compact guide to the latest technical and technological developments in the growing field of non invasive diagnosis in clinical dermatology. Information is provided on the practical and technical characteristics of a wide range of equipment and methods for in vivo measurements that aid in the investigation of skin function, the evaluation of topically applied products and the monitoring of skin disease. Individual sections are devoted to imaging techniques, skin analysis, superficial skin analysis, skin mechanics, water and stratum corneum hydration and erythema and blood flow. All of the authors are experts in the field, with detailed knowledge of the techniques they describe. Non Invasive Diagnostic Techniques in Clinical Dermatology will be of value for all dermatologists, whether they are engaged in delivering patient care or in research programs, for cosmetic scientists and for biologists involved in skin research and product assessment.