Suncreen labels: What does "PA" mean?
Sunscreen labels: What does "PA" mean?QuestionWhat does the "PA" ranking on a sunscreen label mean? AnswerAll sunscreen labels list a sun protection factor (SPF). SPF is a measurement of how much protection the sunscreen offers from the UVB rays that cause sunburn. A few sunscreen labels also list a "PA" ranking, which refers to the amount of protection the sunscreen offers from the UVA rays that may cause long-term skin damage. PA rankings are listed as PA+, PA++ or PA+++. The more +'s, the more protection from UVA rays. For maximum protection from both UVA and UVB rays, choose a broad-spectrum sunscreen that contains avobenzone, oxybenzone, mexoryl, zinc oxide or titanium dioxide. Apply sunscreen liberally 30 minutes before going outdoors and reapply every two hours. RelatedLast Updated: 08/08/2007 © 1998-2013 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.com," "Mayo Clinic Health Information," "Reliable information for a healthier life" and the triple-shield Mayo logo are trademarks of Mayo Foundation for Medical Education and Research.
Terms and conditions of use |
|
|
|
|
