Glossary
11 terms
Ashwagandha: The Clinical Evidence Behind This Cortisol-Lowering Adaptogen
The clinical evidence for ashwagandha (KSM-66) in reducing cortisol, relieving stress, and improving sleep quality, along with appropriate dosages and safety considerations.
Sunscreen: What SPF Numbers Actually Mean
What SPF really measures, the difference between UVA and UVB, PA ratings explained, how to choose the right sunscreen for your skin type, and how much you actually need to apply.
Niacinamide: One Ingredient for Barrier Repair, Pigmentation, and Pore Control
The clinical evidence behind niacinamide's barrier-strengthening, pigmentation-suppressing, and pore-refining properties, with concentration-based usage guidelines.
Hyaluronic Acid: Why Molecular Weight Changes Everything
How molecular weight determines skin penetration depth, the clinical evidence for topical and oral hyaluronic acid, and how to choose the right product for your goals.
Magnesium by Type: From Glycinate to Threonate, a Selection Guide
The eight most common magnesium forms compared by absorption, target area, and side effects. How to choose between glycinate, threonate, taurate, and citrate based on your goals.
Omega-3: Why DHA and EPA Deserve Separate Attention
The distinct roles of DHA and EPA, clinical evidence for cardiovascular and brain health, optimal dosages, and how to choose the right omega-3 product.
Vitamin D: How the Sunshine Vitamin Regulates Both Immunity and Bone Health
Vitamin D's roles in immunity, bone metabolism, and hormonal balance, along with optimal blood levels, dosage guidelines, and the risks of taking too much.
Probiotics: Different Strains, Entirely Different Effects
How probiotic effects vary by strain, the clinical evidence for gut barrier function and immune modulation, and how to choose the right one for your goals.
Retinol: The Vitamin A Derivative That Resets Your Skin's Cell Turnover
How retinol works, concentration-by-concentration effects, anti-aging clinical evidence, and the right way to use it without wrecking your barrier.
Collagen Peptides: Do They Actually Reach Your Skin When You Take Them Orally?
The clinical evidence behind oral collagen peptide supplementation, their effects on skin elasticity and joint health, optimal dosages, and how to choose the right product.
What Is Ceramide? The Lipid That Makes Up 50% of Your Skin Barrier
Ceramides account for roughly 50% of the lipids in the stratum corneum, making them the cornerstone of skin barrier function. Production drops by up to 40% in your 30s. Here's what that means and how to replenish them.