NARINFLA Journal (English)

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...

Neck Care BLOG NOTE · EN 09 Neck Wrinkle Types: What Korean Skincare Can Address A crease across the neck, a vertical muscle band, and fine surface lines are not the same target. D By Dajeong Park · NARINFLA founder Published October 7, 2026 Evidence reviewed 2026-10-07 Illustrative scene, not a customer testimonial or measured wrinkle improvement. CONTENTS 01 Which neck wrinkle types are worth distinguishing? 02 Why are vertical bands different from wrinkles across the neck? 03 What can a moisturizer actually change on the neck? 04 How should you read a Korean lifting or wrinkle label? 05 Does the neck need a different approach from the face? 06 What would a convincing neck-product study need to show? 07 When should skincare stop being the main answer? FAQ Frequently asked questions In this article Which neck wrinkle types are worth distinguishing? Why are vertical bands different from wrinkles across the neck? What can a moisturizer actually change on the neck? How should you read ...

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...