Sunscreen - Measurements of Sunscreen Protection - SPF Equivalence - PA System

PA System

Asian brands, particularly Japanese ones, tend to use The Protection Grade of UVA (PA) system to measure the UVA protection a sunscreen provides.

The Protection Grade of UVA (PA) system is based on the PPD reaction and is now widely adopted on the labels of sunscreens. According to the Japan Cosmetic Industry Association PA+ corresponds to a UVA protection factor between two and four, PA++ between four and eight, and PA+++ more than eight.

Read more about this topic:  Sunscreen, Measurements of Sunscreen Protection, SPF Equivalence

Other articles related to "pa system":

system" class="article_title_2">Hamish & Andy (radio Show) - Past Segments - PA System
... Every Friday, The PA system is where Hamish Andy take callers that have something to say to a certain person or group that they deem important ...

Famous quotes containing the word system:

    The North American system only wants to consider the positive aspects of reality. Men and women are subjected from childhood to an inexorable process of adaptation; certain principles, contained in brief formulas are endlessly repeated by the press, the radio, the churches, and the schools, and by those kindly, sinister beings, the North American mothers and wives. A person imprisoned by these schemes is like a plant in a flowerpot too small for it: he cannot grow or mature.
    Octavio Paz (b. 1914)