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.comJoin us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] 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 structureWhy visible light affects hair colorThe difference between eumelanin and pheomelaninWhy blonde, bleached, and damaged hair is more vulnerableHair protection tips, including hats, scarves, and leave-on productsWhat to look for in hair UV protectantsWhether 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.Timestamps00:00 - Why nobody talks about sun damage to hair01:40 - Summer, UV index, and the episode’s main question02:40 - Valerie George’s UV damage lecture as the key reference04:37 - Hair structure refresher: cuticle, cortex, and medulla05:42 - Why disulfide bonds matter for hair strength06:38 - UV light and visible light as the two main forms of damage07:19 - How melanin protects hair from sunlight08:41 - Eumelanin vs pheomelanin and why hair color varies09:33 - Why lighter hair usually fades and damages faster11:59 - Why eumelanin protects better from UV than pheomelanin13:09 - Study findings: blonde hair vs dark hair in sunlight15:45 - UV damage vs visible light damage in hair17:39 - The chocolate chip cookie analogy for melanin damage18:07 - Why humidity accelerates sun damage19:09 - Leave-on products vs rinse-off protection19:31 - Why hair SPF is not regulated like skin SPF20:55 - How hair protection is tested and why it is hard to prove21:15 - Why formulators need special ingredients to help filters stick22:20 - Why hats and scarves are the best protection23:37 - Where to find the hosts’ product recommendations and episode notes25:14 - Closing advice: protect your hair from the sun#HairCare #UVDamage #SunscreenForHair #HairProtection #BeautyScience #CosmeticChemistry #SunDamage #BlondeHair #HairScience #BeautyByTheBeaker

It’s about time we give you another peak into our vanity shelves! This week we are spilling the details on our favorite skin and hair care products under $30 (well almost, we need to make one exception for Sadie). As cosmetic formulation chemists we have tried a lot of different products, and are very familiar with all types of ingredients. Join us in the Science Salon for 10 products we are currently obsessed with. And we know how hard it can be to trust ‘influencers’ but don’t worry, we are scientists. We have no affiliation with any of the brands or products that we are talking about in today’s episode. These are just products that we are actually buying, using and liking. Remember, we are talking about PERSONAL care, so even though we like these products, they might not be the best options for you. We are cosmetic formulation chemists, so our suggestions are coming from the sensory experience and wearability of skincare products. We do not necessarily support any efficacy claims that the brands are making. Let us know if you have tried any of these products, or have any products you want our opinions on! We are here to pull back the curtain and expose all your favorite cosmetics. Nat’s Pickse.l.f Holy Hydration Makeup Melting Cleansing Balm Panoxyl Acne Foaming WashThayer’s Hydrating Milky TonerCeraVe Resurfacing Retinol SerumEucerin Age Defense SPF 50 Face SunscreenSadie’s PicksReale Actives Pore Power Exfoliating CleanserVanicream Daily Facial MoisturizerExperiment Beauty Super Saturated SerumRegimen Labs Glycolide Lipid Repair Amika Flash Instant Shine Mask for Shiny Hair Welcome to Beauty by the Beaker, the podcast where Science 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!Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and music, and Hailey Romero for our branding.

Are you ready for perfect hair? Good, because this episode is your scientifically proven guide to perfect hair! .. well… sort of. As it turns out, hair isn’t super vital, and for that reason, there hasn’t been a very strong push for rigorous scientific evaluation. But today we have the closest thing we are going to get to a hair expert, Sadie! Sadie performs microscopic hair analysis, and writes up a customized report, detailing everything you could need to know about your hair. She has looked at thousands of hairs under a microscope, and through this research has seen common hair issues, and today she is sharing the solutions. This week we are back in the science salon, and we are here to solve your hair horrors. First we are covering the basics and talking all about the hair structure. Then we dive into the most frequent issues when it comes to hair. The solution may be more simple than you think! Want your hair analyzed under a microscope? Use code BXB10 for $10 a custom Hair Analysis from Sadie's business, Strandprint!Welcome to Beauty by the Beaker, the podcast where Science 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.Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and music and Hailey Romero for our branding.

What ingredients are in your lash serum? And is it really worth the risk? Long, luscious lashes are a beauty goal for many, but do you really know what's happening when you use those popular eyelash serums? This week we are diving into an unlikely lash lengthener that was discovered while treating glaucoma. We are telling you everything you need to know about prostaglandin analogs. These ingredients not only stimulate lash growth but can also cause side effects like eye color darkening and sunken under-eye fat. In this eye-opening episode, cosmetic chemists Natalie and Sadie explain the science behind lash enhancers, revealing why they're effective and how they might do more harm than good.We cover: How prostaglandin analogs influence your hair growth cycle to produce longer, thicker lashesThe truth about the only FDA-approved lash serum, Bimatoprost (Latisse), and its risksWhy ingredients like peptides and oils might be safer, yet less dramatic, alternativesThe potential danger of prostaglandin analogs causing your eye fat to shrink and your iris to darkenPractical tips to protect your eyelashes and avoid undesired side effects, focusing on more sustainable routine habits.This episode is great for beauty enthusiasts who want that fluttery lash look without risking their eye health. Welcome to Beauty by the Beaker, the podcast where Science 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.Timestamps:00:00 - The chemistry behind lash serums and their effects00:40 - The biology of eyelash phases and how serums extend growth02:14 - Side effects: fat loss under the eyes and eye discoloration03:02 - Glaucoma, prostaglandin analogs, and their accidental lash-growing effects04:17 - The mechanism of prostaglandin analogs on eyelashes and eye health05:09 - FDA-approved lash ingredients versus marketing claims06:02 - The eyelash growth cycle and how serums hijack the process07:27 - How prostaglandin analogs can cause eyelid and eye color changes08:27 - Reversibility of fat loss and risks of eye pigmentation09:25 - Safe lash practices and alternative products10:11 - Summary of risks and safety tips for users of lash serums11:04 - Making your lashes appear longer with makeup tricks12:12 - Practical advice for protecting natural lashes and monitoring side effects13:40 - The importance of clinical evidence in choosing lash serums14:25 - Everyday habits influencing lash health and longevity15:46 - Final safety considerations and product recommendations16:36 - Enhancing lash appearance with makeup techniques17:00 - Final thoughtsVisit our website to read more about this episode and check out our blog post with more sources.www.beautyxbeaker.comJoin us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and music and Hailey Romero for our branding.

Exosomes are rapidly becoming the hottest buzzword in skincare, but what do we really know about their power? Are they the regenerative breakthrough they're made out to be, or simply a clever marketing tactic? If you're curious about whether products claiming to harness these tiny cellular messengers are worth your hard-earned money, this episode is for you!As cosmetic chemists, we cut through the hype to explain what exosomes are, and more importantly, what they aren’t. We are breaking down the science behind these cell signaling vesicles, why their source (human, plant, bacteria, or fungus) matters immensely, and what current research really says about their ability to improve skin. We dive into the biggest misconceptions, including the limitations of topical delivery, the regulation hurdles, and why the price tags often don’t match the proven benefits.We explain the different sources of exosomes, and explore the promising data behind human-derived strains from blood and stem cells, but of course we also highlight just how early-stage and inconclusive most studies remain. We cover some questionable delivery methods like microneedling, patches, and other in-office procedures that might enhance absorption, and why many topical products may never penetrate a healthy skin barrier effectively.Without proper regulation and solid science, many products may be more about impression than efficacy. And we obviously need to cover the regulations, so we highlight how unsubstantiated claims cross into unapproved drug territory, putting consumers at risk. Understanding these nuances helps you make smarter choices, avoid wasted money, and set realistic expectations for skin ‘rejuvenation.’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.Timestamps:00:00 - What are exosomes and why they're key in skincare marketing02:00 - How exosomes function as cell-to-cell messengers03:30 - Different sources of exosomes: human, plant, bacteria, and fungi05:00 - The significance of exosome source on their messaging and effectiveness07:00 - Challenges of topical delivery and clinical methods to bypass the skin barrier10:00 - Regulatory status: FDA approval and legal concerns around exosome claims14:00 - Evidence supporting the use of human-derived exosomes in skincare16:00 - The potential and limitations of bacteria and plant-derived exosomes22:00 - Cost implications: why certain products are more expensive and what that indicates26:00 - Formulation hurdles: stability, storage, and ensuring activity over shelf life30:00 - Efficacy expectations: what current science can and can't promise36:00 - Practical advice: whether to invest in exosome products or opt for proven treatments38:00 - The primary target of skin aging treatments - sun protection and retinoids39:00 - Final thoughts: the future of exosome research and regulatory developmentsVisit our website to read more about this episode and check out our blog post with more sources.www.beautyxbeaker.comJoin us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and music and Hailey Romero for our branding.

Welcome back to the Science Salon! You might claim to be a K-beauty fan, but did you know that it’s a result of Korea’s strategic comeback after the 1997 Asian financial crisis? And was Missha the first Ordinary when it comes to simple and effective, no-frills skincare? This week is part 2 of our K Beauty series, and this week we are discussing all things Hallyu, or the Korean Wave.We break down how Korean beauty became a worldwide phenomenon, why the 10-step Korean skincare routine took off, and what people often get wrong about K-beauty trends (especially regarding sun protection). Welcome to Beauty by the Beaker, the podcast where Science 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.In this episode we cover:What is K-beauty?Is the 10-step Korean skincare routine really necessary?Why is Korean skincare so focused on prevention?How did K-beauty spread globally?What are the cultural and economic forces behind Korean beauty?This episode explores the history of Hallyu, the Korean wave, and how Korean media, K-pop, K-dramas, and beauty products helped shape global beauty standards. We also talk about the benefits and drawbacks of beauty culture, the pressure to look perfect, and why sunscreen, hydration, and prevention are so central to Korean skincare.We mention brands and concepts like Amorepacific, Innisfree, BB cream, cushion foundations, sheet masks, road shops, and the intentional marketing behind K-beauty’s global success. We also discuss how social media and TikTok have influenced the way people think about skincare routines, beauty standards, and “perfect skin.”Whether you’re here for Korean skincare, K-beauty history, beauty science, or cultural analysis, this episode has you covered.Chapters:00:00 Intro02:16 Continuing the K-beauty conversation05:43 Korea’s export strategy and soft power10:02 The rise of K-beauty brands28:18 BB cream and cushion makeup32:27 The 10-step Korean skincare routine38:07 Sunscreen, prevention, and beauty culture41:46 The pressure of never being enoughKey Sources https://elisehu.com/flawless/Glass Skin, Colourism & SPF Scandals: The Truth Behind The Rise Of Korean Beauty - Behind The BeautyWhy are South Korean cosmetics so popular? | The Global Story PodcastVisit our website to read more about this episode and check out our blog post with more sources.www.beautyxbeaker.comJoin us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and music and Hailey Romero for our branding.

You can’t be a skincare fan and not know about K-Beauty. Today we are talking about the history behind Korea’s astonishing rise to global beauty powerhouse. It’s more than just cosmetic, it’s a story of resilience, strategy, and innovation.Most Americans overlook Korea’s deep history, but a centuries-old story of oppression, evolution, and social shifts laid the groundwork for today’s K-beauty craze. We are going all the way back to the beginning, and looking at how ancient legends and the strict standards of Confucianism laid the groundwork for modern beauty culture. Welcome to Beauty by the Beaker, the podcast where Science 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.This episode is for anyone wondering how history can shape beauty standards. We cover:How ancient Korean beauty standards prioritized external health and inner vitality. Skincare using ingredients like rice water, green tea, and ginseng.The fascinating roles women like the Gisang played as both entertainers and pioneers of skincare techniques, including early double cleansing.The impact of Korea’s political upheavals, from Japanese occupation and the Korean War to the rise of Hallyu, in shaping the industry’s resilience and innovation.The emergence of iconic products like Bakgabun powder, and its lead poisoning downfall, highlighting early challenges in establishing successful skincare lines.How Korea’s cultural exports like K-pop, dramas, and movies have created a global fascination that fueled the Korean Wave (Hallyu), turning to soft power with enormous economic influence.00:00 — The Origins of K-Beauty and Korean History06:53 — Cultural Influences and Historical Context09:42 — Beauty Standards Through the Ages13:33 — The Impact of Confucianism on Beauty21:32 — Japanese Occupation and Its Effect on Korean Exports25:50 — The Rise of Korean Cosmetics30:26 — The Emergence of the Modern Girl32:42 — The Birth of Amore Pacific35:57 — Challenges During the Korean War38:37 — The Impact of Political Regimes on Beauty Standards40:49 — The Factory Girl Aesthetic43:34 — The Shift Towards Democracy and Globalization46:22 — The Korean Wave and Its Influence on Beauty49:46 — Conclusion: Like, Subscribe and FollowKey Sources https://elisehu.com/flawless/Visit our website to read more about this episode and check out our blog post with more sources.Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and Hailey Romero for our branding.

We bet you have heard of Ozempic, but did you know it was first discovered in Gila Monster venom? This week we are talking about weight loss drugs, and the shocking side effects they can cause. If you're curious about the science, the beauty industry's profit-driven response, and why these weight-loss drugs might be doing more harm than good, this episode is your essential guide. We talk about the mechanism of action, and how it's used for managing blood sugar and suppressing appetite. We’re talking all about how and why these drugs work, and why their popularity has skyrocketed beyond medical need into the realm of aesthetic obsession.We break down the real risks, like facial volume loss, "Ozempic face," and the accelerated aging many users are experiencing. We reveal how the beauty and skincare industry is quick to cash in on these side effects, marketing products that promise to reverse or hide the very issues caused by these powerful medications. You'll learn why topical treatments and expensive serums are often a marketing illusion that can't substitute real medical procedures for lifting or tightening skin.This episode is for anyone concerned with body image, or interested in understanding the truth behind rapid weight loss and beauty industry hype. As cosmetic chemists, our goal is to help you recognize the industry’s tactics designed to profit from insecurities. Because understanding the science and the industry’s game means you're less likely to fall prey to false promises.Note: We are not medical professionals. Always consult with a healthcare provider before making decisions about your health or medication. This episode offers context and insights but is not medical advice.Welcome to Beauty by the Beaker, the podcast where Science 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 sources.Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and Hailey Romero for our branding.In this episode:The history of society’s obsession with thinness and the rise of appetite-suppressing drugsHow GLP-1 drugs like Ozempic work biologically and their primary purposesThe aesthetic side effects associated with rapid weight loss, notably "Ozempic face"The surge of beauty products marketed specifically to mitigate side effects of OzempicCritical insights into marketing claims around "Ozempic skincare" and fake efficacyThe risks of self-prescribing and unregulated beauty solutionsRecommendations for safe, effective approaches and consulting professionalsTimestamps:00:00 - Society's obsession with thinness since the 1800s02:02 - The rise of appetite-suppressing drugs and their side effects04:13 - Introduction to GLP-1 drugs and their purpose07:05 - How GLP-1 from venom inspired Ozempic's development09:23 - Medical uses for GLP-1 drugs in diabetes and weight management12:13 - Societal pressures fueling misuse of these drugs for aesthetic goals14:33 - Side effects including "Ozempic face" and facial volume loss16:05 - The body's natural aging reveal through rapid weight loss18:18 - Rising cosmetic solutions targeting side effects like sagging skin and dullness20:09 - Marketed skincare products for "GLP-1 skin concerns" and their questionable claims22:31 - Evaluation of studies supporting these skincare claims24:10 - The beauty industry's cycle: creating problems and selling solutions27:36 - The importance of consulting healthcare professionals before using drugs or products

This week we are diving deep into Accutane, also known as isotretinoin. This is one of the most talked about acne treatments in dermatology. If you’ve ever wondered how Accutane works, why skin can get worse before it gets better, what the purge phase feels like, or whether Accutane is actually safe, this episode breaks it all down in a science-backed, easy-to-understand way.We cover the accidental discovery of Accutane, the history behind isotretinoin, how it targets sebaceous glands and oil production, and why it’s often considered a last-resort treatment for severe or stubborn acne. We also talk about common Accutane side effects like dry skin, dry lips, bloody noses, joint pain, vision changes, and increased breakouts during the purge phase.You’ll also learn about the iPledge system, the required pregnancy prevention program, the controversy around its new rollout, and the reasons dermatologists and patients have criticized it. We are discussing the real-world experience of going on Accutane, as well as the emotional side of dealing with Acne. We talk about how to decide with a medical professional, how to determine the right time, if ever, to try this stuff out. Whether you’re researching Accutane for yourself, comparing acne treatments, or just want to understand the science behind one of dermatology’s most effective medications, this episode is for you.Chapters: 00:00 Intro + why Accutane deserves its own episode02:03 What Accutane is and what it treats04:17 How acne actually forms06:10 The history of Accutane09:10 Early studies and why it worked so well13:13 How Accutane works18:03 Getting prescribed Accutane19:19 Dosage, cumulative dose, and cost21:19 Pregnancy testing, birth control, and iPledge25:15 The iPledge controversy and website overhaul27:47 Common side effects and purge phase30:47 Long-term effects and benefits31:22 Microdosing Accutane32:14 Does acne come back after Accutane?33:05 Should you be scared of Accutane?34:37 Acne stigma and confidence37:39 Final thoughts on trying Accutane39:06 OutroWelcome to Beauty by the Beaker, the podcast where Science 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 sources.Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and Hailey Romero for our branding.

EMERGENCY SUNSCREEN UPDATE! The FDA just approved the first UV filter in over 20 years! Join us for breaking news in US sunscreens. This ingredient promises to be the safest and most effective filter the United States Market has ever seen, but what does that actually mean as a consumer? This week we are telling you EVERYTHING you need to know about Bemotrizinol, BEMT, bis-ethylhexyloxyphenol methoxyphenyl triazine (Which is actually still an INCI name, not IUPAC) Tinosorb S, or Parsol SHIELD. Whatever you decide to call it, we are here to break down what it means for the future of your sun protection products. Plus we are diving into the history of sunscreen regulation, and explaining why this ingredient is brand new in the US, but has been used abroad for almost 20 years. If you’ve ever wondered why American sunscreens feel different from those in Europe or Korea, this episode unpacks the complex history behind US regulations and the science behind a game-changing sunscreen active, BEMT. We are unpacking how this new ingredient offers broader UV protection, reduces skin irritation, and could finally end the white cast nightmare.Whether you’re a skincare fanatic or just tired of greasy feeling skin, you’ll discover how this novel ingredient could make your sunscreen better, lighter, and more effective, and why it’s a symbol of progress in a long-standing regulatory limbo. 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 sources.Join us on Instagram, Facebook, TikTok and Youtube!@beautyxbeaker@natbxb@sadiebxbContact us at [email protected] thanks to Flip Twogood for our photos and Hailey Romero for our branding.0:00 Introduction and Episode Overview2:10 Emergency Sunscreen Update  3:05 Understanding Sunscreen Ingredients 16:33 FDA Approval Process Explained 19:08 Historical Context of Sunscreen Regulation25:43 Future of Sunscreen in the US32:58 Conclusion and Social Media Call to ActionSources: https://www.fda.gov/news-events/press-announcements/fda-expands-sunscreen-options-first-time-20-yearshttps://www.npr.org/2026/06/13/nx-s1-5856385/sunscreen-skin-protection-bemotrizinolhttps://labmuffin.com/how-do-sunscreens-work-the-science-with-video/https://pmc.ncbi.nlm.nih.gov/articles/PMC8682817/https://www.fda.gov/drugs/historical-status-otc-rulemakings/rulemaking-history-otc-sunscreen-drug-productshttps://www.govinfo.gov/content/pkg/FR-1999-05-21/pdf/99-12853.pdfhttps://pmc.ncbi.nlm.nih.gov/articles/PMC12332967/https://thehill.com/policy/healthcare/5922475-bemotrizinol-sunscreen-approval-fda/