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How often do you have to reapply chem-free sunscreen?

Asked by Tom 1.86K Rep.

how often do u have to reapply chem-free sunscreen

Tom answered
    Dr. Schultz 1.86K Rep.

    Chem-free sunscreen needs to be reapplied just as often as traditional sunscreen: after you swim, after you sweat, and every three to four hours when not doing activities (because of insensible perspiration).

    Dr. Schultz answered

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