Your Skin's Renewal System: The Real Science of Stem Cells

Zombie Cells Are Aging Your Skin: Here's How to Stop Them

Send us Fan Mail [https://www.buzzsprout.com/2459772/fan_mail/new] It sounds like science fiction, but the zombie apocalypse is real, and it is happening in your skin right now. In this episode, I explore cellular senescence: what it is, why it happens, and why it is one of the most important (and most misunderstood) processes in skin aging. Senescent cells are not dead, but they are not truly alive or useful either. They stop dividing, refuse to be eliminated, and begin secreting a toxic cocktail of inflammatory molecules, collagen-destroying enzymes, and damaging signals that accelerate aging in every healthy cell around them. In the skin hotel metaphor: retired staff members who refuse to leave the building, gossip in the corridors, and poison the atmosphere for everyone else. I explain what senescence does to fibroblasts, keratinocytes, and melanocytes specifically, why stimulating senescent cells makes things dramatically worse rather than better, and what the two real strategies for managing senescence actually are: senolytic (eliminating zombie cells) and senomorphic (silencing them). I also cover the triggers that accelerate senescence (UV radiation, oxidative stress, chronic inflammation, glycation, and lifestyle choices) and what you can practically do about all of them, from quercetin-rich food and resveratrol skincare to sleep, physical activity, and knowing which aesthetic procedures are genuinely senolytic rather than just stimulating. Episode resources: Healthy Foods High in Quercetin [https://www.webmd.com/diet/foods-high-in-quercetin] Fisetin: A Dietary Antioxidant for Health Promotion - PMC - NIH [https://pmc.ncbi.nlm.nih.gov/articles/PMC3689181/] Hallmarks of aging: An expanding universe by Carlos López-Otín [https://pubmed.ncbi.nlm.nih.gov/36599349/] Learn more from the previous episodes: The 12 Hallmarks That Shape Your Skin [https://podcasts.apple.com/us/podcast/the-12-hallmarks-that-shape-your-skin/id1801328245?i=1000758377851] Vita-Long 2.0: Addressing 8 Hallmarks of Aging in One Formula [https://podcasts.apple.com/us/podcast/vita-long-2-0-addressing-8-hallmarks-of-aging-in-one-formula/id1801328245?i=1000762533703] The Real Cellular Detox Your Skin Is Already Doing [https://podcasts.apple.com/us/podcast/the-real-cellular-detox-your-skin-is-already-doing/id1801328245?i=1000767340579] Glycation Explained: How Sugar Damages Collagen [https://podcasts.apple.com/us/podcast/glycation-explained-how-sugar-damages-collagen/id1801328245?i=1000739252788] Your Skin's Renewal System: The Real Science of Stem Cells [https://podcasts.apple.com/us/podcast/your-skins-renewal-system-the-real-science-of-stem-cells/id1801328245?i=1000768521458] Shop the skincare we talked about today: Vita-Long 2.0 - Advanced skin longevity care [https://eu.mederbeauty.com/products/vita-long-oil] Connect with us: Meder by Dr. Tiina Meder [https://mederbeauty.com/] Meder Beauty Instagram [https://www.instagram.com/mederskincareus/#] Meder Beauty Facebook [https://www.facebook.com/MederBeauty] Meder Beauty TikTok [https://www.tiktok.com/@meder_beauty] Meder Beauty LinkedIn [https://www.linkedin.com/company/meder-beauty-science-&-spa/] Meder Beauty YouTube [https://www.youtube.com/@MederBeautyInternational] Listen to the Meder Beauty Podcast on Apple Podcasts [https://podcasts.apple.com/us/podcast/meder-beauty-podcast/id1760963676]

Your Skin's Renewal System: The Real Science of Stem Cells

Send us Fan Mail [https://www.buzzsprout.com/2459772/fan_mail/new] Stem cells are one of the most romanticized, and most misunderstood, concepts in both skincare and anti-aging medicine. In this episode, I want to cut through the confusion and speak about stem cells honestly: first as the biological renewal system at the heart of your skin's longevity, and then as cosmetic ingredients, because these are two very different conversations. I explain the four stem cell academies of the skin (epidermal, melanocyte, dermal, and adipose-derived), where they live, what they do, and what happens to each of them as we age. I discuss the natural enemies of your stem cell pool: UV radiation, oxidative stress, chronic inflammation, and aggressive aesthetic treatments performed too young, and the extreme loss of facial fat (something the industry rarely talks about). I also address the question of ozempic, extreme leanness, and what happens to your skin's renewal capacity when you lose fat tissue, because this is a conversation that needs to happen now. And finally, I demystify what "stem cells" on a cosmetic label actually means, the difference between human or animal stem cell-derived conditioned media, and plant callus lysates like Swiss apple, edelweiss, noni, and maclura. They are very different things, they work through very different mechanisms, and understanding the distinction will change how you read a product label. Your stem cells like safety, stability, and nourishment. They do not like drama, and in this episode, I explain exactly how to give them what they need. Episode resources: Uttwiler Spätlauber - Swiss Apple Stem Cells [https://jacquelinepiotaz.com/pages/uttwiler-spaetlauber] Hallmarks of aging: An expanding universe by Carlos López-Otín [https://pubmed.ncbi.nlm.nih.gov/36599349/] Learn more from the previous episodes:  The Real Cellular Detox Your Skin Is Already Doing [https://podcasts.apple.com/us/podcast/the-real-cellular-detox-your-skin-is-already-doing/id1801328245?i=1000767340579] The Tiny Power Plant Deciding How Your Skin Ages [https://podcasts.apple.com/us/podcast/the-tiny-power-plant-deciding-how-your-skin-ages/id1801328245?i=1000761254600] YouTube Playlist: Sun, Climate & Environmental Stress [https://www.youtube.com/playlist?list=PL21CZDTTBUqM8sRDVdnakPDeTeLq6gJm1] Shop the skincare we talked about today:  Meder Arma-Lift Concentrate | Age Well Firming Serum [https://mederbeauty.com/products/arma-lift-concentrate] Connect with us: Meder by Dr. Tiina Meder [https://mederbeauty.com/] Meder Beauty Instagram [https://www.instagram.com/mederskincareus/#] Meder Beauty Facebook [https://www.facebook.com/MederBeauty] Meder Beauty TikTok [https://www.tiktok.com/@meder_beauty] Meder Beauty LinkedIn [https://www.linkedin.com/company/meder-beauty-science-&-spa/] Meder Beauty YouTube [https://www.youtube.com/@MederBeautyInternational] Listen to the Meder Beauty Podcast on Apple Podcasts [https://podcasts.apple.com/us/podcast/meder-beauty-podcast/id1760963676]

The Real Cellular Detox Your Skin Is Already Doing

Send us Fan Mail [https://www.buzzsprout.com/2459772/fan_mail/new] "Detox" is one of the most overused words in the beauty and wellness industry. Detox teas, detox masks, detox intravenous drips, somehow they all promise to pull toxins out of your body through your pores or your intestines. Biologically, none of it works the way the marketing claims. In this episode, I want to answer the real question: can we actually detox our skin and our body? And the answer is YES, but only if we understand how detoxification actually happens at a cellular level. I explore two of the most important and most overlooked processes in skin biology: autophagy (the cell's intelligent self-cleaning and recycling service), and apoptosis (the programmed cell death that removes damaged and dangerous cells before they cause serious harm). I explain why both are recognized as hallmarks of aging, what happens to the skin when they start to fail, and why failed autophagy is directly connected to dark spots, sagging, collagen loss, and even cancer risk. I also cover the practical side, what lifestyle habits genuinely support these cellular processes, why intermittent fasting and regular exercise are among the most effective autophagy activators available, and which skincare ingredients can support the skin's natural detox system from the outside.  The green smoothie will not detox your skin, but understanding what your cells are already doing, and giving them the conditions to do it well, just might. Episode resources: Hallmarks of aging: An expanding universe (Carlos López-Otín) [https://pubmed.ncbi.nlm.nih.gov/36599349/] Learn more from the previous episodes:  Vita-Long 2.0: Addressing 8 Hallmarks of Aging in One Formula [https://podcasts.apple.com/us/podcast/vita-long-2-0-addressing-8-hallmarks-of-aging-in-one-formula/id1801328245?i=1000762533703] The Tiny Power Plant Deciding How Your Skin Ages [https://podcasts.apple.com/us/podcast/the-tiny-power-plant-deciding-how-your-skin-ages/id1801328245?i=1000761254600] Epigenetic Skincare: Can We Reprogram How Our Skin Ages? [https://podcasts.apple.com/us/podcast/epigenetic-skincare-can-we-reprogram-how-our-skin-ages/id1801328245?i=1000766188882] Active Longevity vs Anti-Aging: The Real Difference [https://podcasts.apple.com/us/podcast/active-longevity-vs-anti-aging-the-real-difference/id1801328245?i=1000755718377] YouTube Playlist: Sun, Climate & Environmental Stress [https://www.youtube.com/playlist?list=PL21CZDTTBUqM8sRDVdnakPDeTeLq6gJm1] Shop the skincare we talked about today:  Meder Beauty's Lipo-Oval Serum [https://mederbeauty.com/products/lipo-oval-concentrate?variant=44666888749341] Connect with us: Meder by Dr. Tiina Meder [https://mederbeauty.com/] Meder Beauty Instagram [https://www.instagram.com/mederskincareus/#] Meder Beauty Facebook [https://www.facebook.com/MederBeauty] Meder Beauty TikTok [https://www.tiktok.com/@meder_beauty] Meder Beauty LinkedIn [https://www.linkedin.com/company/meder-beauty-science-&-spa/] Meder Beauty YouTube [https://www.youtube.com/@MederBeautyInternational] Listen to the Meder Beauty Podcast on Apple Podcasts [https://podcasts.apple.com/us/podcast/meder-beauty-podcast/id1760963676]

Epigenetic Skincare: Can We Reprogram How Our Skin Ages?

Send us Fan Mail [https://www.buzzsprout.com/2459772/fan_mail/new] We often say "it's in my genes" as though our DNA is a fixed sentence we have no power over. But epigenetics tells a very different story, and it changes everything about how I think about skincare. In this episode, I explore the science of epigenetics: how our environment, lifestyle, and even the ingredients we apply to our skin can gently change the way our genes behave, without altering the DNA itself. I explain the difference between the hard drive that never changes and the settings (the on/off switches) that determine everything about how it functions. I walk through the tragic story of the Dutch Hunger Winter, one of the most powerful natural experiments in epigenetic science, and what it revealed about how early environmental stress leaves chemical marks on DNA that can last generations. I discuss twin research, the phenomenon of secular acceleration, and why epigenetic alteration is now recognized as one of the primary hallmarks of aging. I then bring all of this directly into skincare, explaining how glycerin, hyaluronic acid, peptides, niacinamide, and resveratrol all act epigenetically on skin cells, how we test these effects in the lab, and how this science led us to launch our first epigenetically active product at Meder Beauty back in 2017. If you have ever wondered whether skincare can genuinely change how your skin ages at a cellular level, this episode gives you the honest answer. Episode resources: Alexander Meissner, Ph.D. [https://hscrb.harvard.edu/people/alexander-meissner/] Hallmarks of aging: An expanding universe [https://pubmed.ncbi.nlm.nih.gov/36599349/] Accelerated biological aging six decades after prenatal famine exposure [https://pmc.ncbi.nlm.nih.gov/articles/PMC10635274/] Prenatal exposure to the 1944-45 Dutch 'hunger winter' and addiction later in life [https://pubmed.ncbi.nlm.nih.gov/18190668/] Epigenetic Ingredients in Skincare - Meder Journal, March 29, 2023 [https://mederbeauty.com/blogs/blog/epigenetic-skincare] Epigenetic differences arise during the lifetime of monozygotic twins [https://pmc.ncbi.nlm.nih.gov/articles/PMC1174919/] Shop the skincare we talked about today: Meder Beauty's Blepharo-Rich Eye Cream [https://eu.mederbeauty.com/products/blepharo-rich-eye-cream?variant=40169068658711] Anti Aging Intense Face Oil - Vita-Long - Meder Beauty [https://eu.mederbeauty.com/products/vita-long-oil] Learn more from the previous episodes: The 12 Hallmarks That Shape Your Skin [https://podcasts.apple.com/us/podcast/the-12-hallmarks-that-shape-your-skin/id1801328245?i=1000758377851] Vita-Long 2.0: Addressing 8 Hallmarks of Aging in One Formula [https://podcasts.apple.com/us/podcast/vita-long-2-0-addressing-8-hallmarks-of-aging-in-one-formula/id1801328245?i=1000762533703] Hyaluronic Acid: What It Really Does for Your Skin [https://podcasts.apple.com/us/podcast/hyaluronic-acid-what-it-really-does-for-your-skin/id1801328245?i=1000754418592] The Truth About Collagen: Biggest Myths About Taking Collagen [https://podcasts.apple.com/us/podcast/the-truth-about-collagen-biggest-myths-about-taking/id1801328245?i=1000716290311] The Magic of Peptides: Why They’re Transforming Skincare Forever [https://podcasts.apple.com/us/podcast/the-magic-of-peptides-why-theyre-transforming/id1801328245?i=1000704425172] Vitamins in Skincare: What Works, What Doesn’t & What’s Coming Next [https://podcasts.apple.com/us/podcast/vitamins-in-skincare-what-works-what-doesnt-whats-coming/id1801328245?i=1000701699330] https://podcasts.apple.com/us/podcast/your-skins-hidden-ecosystem-why-the-microbiome/id1801328245?i=1000706493490

Pro Tips for Building a Smarter Skincare Routine w/ Sarah Drew

Send us Fan Mail [https://www.buzzsprout.com/2459772/fan_mail/new] One of the most common questions I receive is deceptively simple: how do I introduce a new product into my existing routine? In this episode of the Meder Beauty Podcast, I sit down with medical aesthetician Sarah Drew to answer exactly that, and to challenge some of the assumptions behind the question itself, because sometimes the right answer is not to add a new product at all. Together we cover how to audit an existing routine before reaching for something new, why the cleanser matters more than the serum, how to do a proper allergy test, the real meaning of "hypoallergenic," why mixing hero products from multiple brands is riskier than it seems, and how packaging affects preservation, allergic potential, and shelf life. We also share the practical safety rules every consumer should know before making their next skincare purchase, from weekly masks and eye creams to active serums and retinoids. A conversation that is equal parts practical, honest, and genuinely useful for anyone who has ever felt overwhelmed standing in front of a skincare shelf. Episode resources: Meder Mask Box Set [https://mederbeautyscience.com.au/product/meder-mask-set/] Learn more from the previous episodes: The Value of a Skin Professional with Sarah Drew [https://podcasts.apple.com/us/podcast/the-value-of-a-skin-professional-with-sarah-drew/id1801328245?i=1000700723073] Why Skincare Strategy Starts With Listening First with Sarah Drew [https://podcasts.apple.com/us/podcast/why-skincare-strategy-starts-with-listening-first/id1801328245?i=1000705372814] Are Aggressive Skin Treatments Worth the Risk w/ Sarah Drew [https://podcasts.apple.com/us/podcast/are-aggressive-skin-treatments-worth-the-risk-w-sarah-drew/id1801328245?i=1000756942984] Connect with us: Sarah Drew Instagram [https://www.instagram.com/queenofskinco/] Meder by Dr. Tiina Meder [https://mederbeauty.com/] Meder Beauty Instagram [https://www.instagram.com/mederskincareus/#] Meder Beauty Facebook [https://www.facebook.com/MederBeauty] Meder Beauty TikTok [https://www.tiktok.com/@meder_beauty] Meder Beauty LinkedIn [https://www.linkedin.com/company/meder-beauty-science-&-spa/] Meder Beauty YouTube [https://www.youtube.com/@MederBeautyInternational] Listen to the Meder Beauty Podcast on Apple Podcasts [https://podcasts.apple.com/us/podcast/meder-beauty-podcast/id1760963676]