Meder Beauty
You want healthy, glowing skin—but with all the products, trends, and conflicting advice, it’s hard to know what actually works. Welcome to the Meder Beauty Podcast, hosted by Dr. Tiina Meder, a former cardiologist and board-certified dermatologist. In each episode, we uncover what really matters, break down the science, and give you real, expert-backed skincare advice. Whether you’re looking to achieve radiant healthy skin, curious about anti-aging, or want to understand what’s really in your products, you’re in the right place. Rooted in science and the truth about what your skin actually needs, we’ll have in-depth conversations with leading dermatologists, medical experts, and skincare brand founders to bring you the latest innovations, evidence-based insights, and industry secrets that truly make a difference.
Meder Beauty
How Ingredients Interact. The Truth Behind Skincare Mixing Errors
Most people mix skincare products without thinking about how the ingredients interact.
In this episode, I explain something I see every day in my clinical work. Some ingredients work beautifully together. Others neutralize each other completely. And some combinations can irritate the skin, damage the barrier, and create long-lasting problems. I speak about the pairings that worry me most, including retinol with acids, acids with acids, peptides with acids, vitamin C with niacinamide, and benzoyl peroxide with almost anything. I also explain why essential oils can be unpredictable and why some formulas lose their effect the moment you apply another product. Of course, there are amazing synergetic combinations too. I share the antioxidant trios, peptide partnerships, and microbiome-friendly formulations that consistently give better results.
My goal in this episode is simple. I want to help you understand what is safe, what actually works, and how to protect your skin from avoidable mistakes. When you know how ingredients behave, your skincare becomes more effective and far more enjoyable.
Learn more from the previous episodes:
Beyond Retinol: The New Science of Safer, Smarter Skincare
The Magic of Peptides: Why They’re Transforming Skincare Forever
Vitamins in Skincare: What Works, What Doesn’t & What’s Coming Next
What Most People Get Wrong About Antioxidants in Skincare
Your Skin’s Hidden Ecosystem: Why the Microbiome Matters More Than You Think
Connect with us:
Listen to the Meder Beauty Podcast on Apple Podcasts
