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P. 23-24 /

THE DISCUSSION
What SPF should I expectfrom my Sunscreen?

corresponding

JOHN STATON
Dermatest Pty Ltd., 20 – 22
King St., Rockdale NSW 2216, Australia

SPF Yield is defined as the SPF per percentage of total actives included in the formula. It is of importance in terms of maximising efficiency of formulations, usually with the objectives of minimising cost, reducing the influence of UV absorbing chemicals on the aesthetic properties of the formula and potentially reducing any perceived risks associated with higher levels of actives.

Last year, the manufacturers of SPF actives were asked to give us their expectations and those who replied indicated that a yield of from 1 to 2 should be the expectation.

 


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