Madalene C.Y. Heng | Author | SciTechnol

Madalene C.Y. Heng Author

MadaleneHeng@aol.com +1 310-825-6373 | +1 310-825-6

Subjects of specialization
Dermatology , Internal Medicine,pathophysiology,treatment of diseases,Medicine

Affiliation
UCLA School of Medicine, USA

Biography

Dr. Madalene Heng is currently a Professor of Medicine/Dermatology UCLA School of Medicine. She was the chief of Dermatology at the UCLA/San Fernando Valley Internal Medicine Program for 25 years. Dr Heng is a With more than 130 scientific publications including 75 articles in peer-reviewed journals on topics such as psoriasis, pathophysiology of disease and wound healing, Dr. Heng is able to link treatment of diseases to their pathophysiology at the basis science level.

Publications

Editorial Open Access

Sun Protection Factors in Evaluation of Sunscreen Potency: The Persistent Pigment Darkening Method

Author(s):

Madalene C.Y. Heng

Sun Protection Factors in Evaluation of Sunscreen Potency: The Persistent Pigment Darkening Method

The Persistent Pigment Darkening (PPD) method has been modified by Bissonette et al. as an in vivo assay for UVA exposure. This is the gold standard with which to compare many other methods that assay the potency of sunscreens that block UVA damage. In view of the current interest in evaluation of sun protection factors (SPF), it is important to ensure the validity of current methodology used to evaluate UVB and UVA exposure before meaningful evaluation of sun protection factors and potency of sunscreens against UVinduced damage can be made.

DOI: 10.4172/2324-9293.1000e101

Abstract HTML PDF