Episode 379 - Wonder Water, Product Dupes, Sunscreen layering and more

Send us a text On today’s show we cover lots of questions including… Can layering sunscreens make them less effective?Why can’t you use L’oreal wonder water on your scalp?What’s the history of using blue light to treat acne?Is it damaging to use a pre-treatment on hair?When can you call a formula a “dupe”?Beauty News The Beauty Brains were on the Pretty Curious podcast. Approximate timestamps 0:00 Chit chat - Pretty Curious podcast, Thailand, Lip problems 7:40 Vitamin C derivatives follow-up ...