Series

Skin Longevity Series

A weekly series on the healthy lifespan of skin, published every Tuesday. All episodes, including the upcoming schedule, are listed here.

Published

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No.16A Century of Beauty ResearchNEW2026.11.03No.15Retinol vs Bakuchiol: Is the "Natural Retinol" Claim Real?2026.10.27No.14The Three Dermal Pillars — Collagen, Elastin and Hyaluronic Acid2026.10.20No.13The First Three Signs of Aging — Preventive Skincare from Your 30s2026.10.13No.12Designing Moisture in Layers — Humectant, Occlusive, Emollient2026.10.06No.11Is PDRN (Salmon DNA) the Real Deal? Grading Regenerative Buzz Ingredients with Science2026.09.29No.10Ceramide, the Protagonist — The Science of the Lipid That Binds the Skin2026.09.22No.9Re-examining the "28-Day Turnover" Myth Through Science2026.09.15No.8The 4-Week Summer Damage Recovery Blueprint2026.09.08No.7The Season-Change Switch: How the Autonomic Nervous System and the Skin Barrier Move Together2026.09.01No.6Grading the Buzzwords of Brightening Skincare2026.08.25No.5The 3-Day Obon Reset ── A Concentrated Rest Protocol for Sun-Tired Skin2026.08.18No.4The Invisible Dryness Under Air Conditioning — The Science of TEWL and Barrier Function2026.08.11No.3The Science of Summer Acne—Sweat, Sebum, Clogged Pores, and the Ecology of C. acnes2026.08.04No.2Midsummer UV Final Defense — Preparing for Four Layers: UVA, UVB, Visible Light & Near-Infrared2026.07.28No.1Choosing Skin Longevity: The Pledge KAIAN Makes This July2026.07.21No.0The Lens of Evidence Concentration — The Line Between "Contains" and "Works"2026.07.14

Upcoming

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No.17The Science of Skin and Gut — Decoding the Skin-Gut AxisUpcoming2026.11.10
No.18Body Care Blind Spots: Why Age Shows on the Neck, Décolletage, and ElbowsUpcoming2026.11.17
No.19Trend Check: The Real Power of Exosome CosmeticsUpcoming2026.11.24
No.20Lipid Balance in Deep Winter: Designing Skin's Oils from Inside and OutUpcoming2026.12.01
No.21The 24-Hour Pre-Party ProtocolUpcoming2026.12.08
No.22Gifting "Functional Longevity" This Christmas — Choosing Skincare as a Scientific GiftUpcoming2026.12.15
No.23[Trend Check] The 2026 Buzz-Ingredient ReckoningUpcoming2026.12.22
No.24A 2027 Manifesto: The Next Step for Skin LongevityUpcoming2026.12.29
Journal →