Guest guest Posted April 26, 2000 Report Share Posted April 26, 2000 Zinco has an SPF of 20. During the summer, with more direct sunlight as well as more hours of sunlight, is SPF 20 enough coverage if you're doing outdoor activities such as kayaking, hiking,etc.? If additional sunblock is needed, should it be applied prior to or after the the application of Zinco? Patti Quote Link to comment Share on other sites More sharing options...
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