Is Your Hair Safe From The Sun? UV Might Not Be The Problem - EP 48

Summer isn’t over yet! We have stressed the importance of sunscreen, but how does the sun affect your hair? In this episode we are breaking down the science of UV damage, visible light, melanin, and why some hair fades or weakens faster in the sun. Have you ever wondered if your hair needs sunscreen? Tune in, this episode is for you. Welcome to Beauty by the Beaker, the podcast where Sciences Gets a Hot New Makeover! We're two cosmetic chemists who want to reveal what really goes into your favorite products. Join us in the Science Salon! Whether you’re a skincare enthusiast, a curious consumer, or just tired of being told coconut oil cures everything, you’re in the right place. Let's gossip about all things beauty together! Pull up a chair, your appointment's about to start. Visit our website to read more about this episode and check out our blog post with more sources. www.beautyxbeaker.com Join us on Instagram, Facebook, TikTok and Youtube! @beautyxbeaker @natbxb @sadiebxb Contact us at info@beautyxbeaker.com Special thanks to Flip Twogood for our photos and music and Hailey Romero for our branding. In this episode we cover: How UV light damages hair structure Why visible light affects hair color The difference between eumelanin and pheomelanin Why blonde, bleached, and damaged hair is more vulnerable Hair protection tips, including hats, scarves, and leave-on products What to look for in hair UV protectants Whether you’re looking for science-backed hair care tips, summer hair protection advice, or a deeper understanding of UV and visible light damage, this episode has you covered. Timestamps 00:00 - Why nobody talks about sun damage to hair 01:40 - Summer, UV index, and the episode’s main question 02:40 - Valerie George’s UV damage lecture as the key reference 04:37 - Hair structure refresher: cuticle, cortex, and medulla 05:42 - Why disulfide bonds matter for hair strength 06:38 - UV light and visible light as the two main forms of damage 07:19 - How melanin protects hair from sunlight 08:41 - Eumelanin vs pheomelanin and why hair color varies 09:33 - Why lighter hair usually fades and damages faster 11:59 - Why eumelanin protects better from UV than pheomelanin 13:09 - Study findings: blonde hair vs dark hair in sunlight 15:45 - UV damage vs visible light damage in hair 17:39 - The chocolate chip cookie analogy for melanin damage 18:07 - Why humidity accelerates sun damage 19:09 - Leave-on products vs rinse-off protection 19:31 - Why hair SPF is not regulated like skin SPF 20:55 - How hair protection is tested and why it is hard to prove 21:15 - Why formulators need special ingredients to help filters stick 22:20 - Why hats and scarves are the best protection 23:37 - Where to find the hosts’ product recommendations and episode notes 25:14 - Closing advice: protect your hair from the sun #HairCare #UVDamage #SunscreenForHair #HairProtection #BeautyScience #CosmeticChemistry #SunDamage #BlondeHair #HairScience #BeautyByTheBeaker