NARINFLA Journal (English)

Ingredient Evidence BLOG NOTE · EN 04 EGF Serum Benefits: What Studies Do and Do Not Show A study-reading guide for fine lines, texture and the gap between a mechanism and a bottle. D By Dajeong Park · NARINFLA founder Published October 7, 2026 Evidence reviewed 2026-10-07 Staged illustration, not a photograph of an actual trial, laboratory or original report. CONTENTS 01 What EGF serum benefits have human studies investigated? 02 Does EGF’s role in repair prove a serum rebuilds collagen? 03 What can a controlled EGF delivery study tell us? 04 Why do mixed formulas and procedures make EGF claims harder to interpret? 05 How can I tell a strong study claim from a marketing shortcut? 06 How soon should I expect an EGF serum to change my skin? 07 What is a reasonable way to evaluate an EGF serum before buying? FAQ Frequently asked questions In this article What EGF serum benefits have human studies investigated? Does EGF’s role in repair prove a serum rebuilds collagen? What can a contro...

Safety Questions BLOG NOTE · EN 03 Is EGF Safe in Skincare? Cancer and Pregnancy Questions Separate the biological concern from what cosmetic exposure studies can actually establish. D By Dajeong Park · NARINFLA founder Published October 7, 2026 Evidence reviewed 2026-10-07 Illustrative label-checking scene. The image is not evidence of safety. CONTENTS 01 Why does EGF raise questions about cancer? 02 Does topical EGF skincare cause cancer? 03 Does the way EGF reaches the skin change the safety question? 04 What does a patch test or short safety study actually prove? 05 Is EGF skincare safe during pregnancy or breastfeeding? 06 Does a regulated cosmetic or Korean functional label settle safety? 07 When is a clinician’s review more useful than another product claim? FAQ Frequently asked questions In this article Why does EGF raise questions about cancer? Does topical EGF skincare cause cancer? Does the way EGF reaches the skin change the safety question? What does a patch test or shor...

Ingredient evidence BLOG NOTE · EN 05 Adenosine in Korean Skincare: Reading Wrinkle Claims The ingredient, the Korean claim, and the evidence are three different things. D By Dajeong Park · NARINFLA founder Published October 7, 2026 Evidence reviewed 2026-10-07 Illustrative texture scene. Appearance alone does not identify adenosine or its concentration. CONTENTS 01 What is adenosine doing in a wrinkle-care formula? 02 Does Korean recognition mean every adenosine product is approved? 03 Can the percentage tell you whether a wrinkle claim is valid? 04 What do human wrinkle studies actually show? 05 How should you compare a modest claim with an inflated one? 06 What should you check before buying an imported bottle? 07 What is a reasonable expectation from adenosine skincare? FAQ Frequently asked questions In this article What is adenosine doing in a wrinkle-care formula? Does Korean recognition mean every adenosine product is approved? Can the percentage tell you whether a wrinkle cla...