Are spray sunscreens illegal? And other sunblock questions – Episode 175
The Beauty Brains
FEBRUARY 25, 2019
I looked into how this works and according to a patent granted in 2001 (patent 6290936B1) they use a water-soluble dye or a blend of water-soluble dyes whose color substantially disappears when the sunscreen emulsion dries after it is spread on the skin and/or is rubbed out. Support the Beauty Brains! The Beauty Brains are now on Patreon !
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