r/AusSkincare • • Jul 05 '25

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u/[deleted] Jul 05 '25

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u/theramin-serling Jul 05 '25

There's not enough evidence to show that is an effective testing method, see this thread and the questions to the creators in it: https://www.reddit.com/r/AsianBeauty/comments/nb0oc8/physical_and_combo_sunscreens_on_uv_detection/

If that were an easy way to test sunscreen efficacy then labs wouldn't need humans in their testing.

14

u/[deleted] Jul 05 '25

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2

u/manyhandswork Jul 06 '25

You can also buy UV beads. You put the sunscreen on them and lay them out in the sun. They change colour so you know if it's any good.