Episode 380 - Wonder Water, Product Dupes, Sunscreen layering and more

Send us a textOn 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 NewsThe Beauty Brains were on the Pretty Curious podcast.Approximate timestamps0:00 Chit chat - Pretty Curious podcast, Thailand, Lip problems7:40 Vitamin C derivatives follow-up13:20 S...