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NARINFLA Journal · All posts

All 16 articles from NARINFLA Journal, written by cosmetic developer Dajeong Park (founder of NARINFLA, Korea), explaining Korean skincare ingredients and labels with published evidence.

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Last updated 2026-10-17

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How EGF Appears on an Ingredient List: sh-Oligopeptide-1 and Other Growth-Factor Names

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NARINFLA Journal · Ingredient Labels · Published 2026-09-30 · Last reviewed 2026-09-30 · 한국어 Short answer On an ingredient list, EGF (epidermal growth factor) usually appears as sh-Oligopeptide-1 , not as "EGF". Other growth factors use similar "sh-" or "rh-" names, such as sh-Oligopeptide-2 (IGF-1) and sh-Polypeptide-1 (bFGF). They normally sit near the end of the list, and that position alone does not tell you how much is inside. NARINFLA Lifting Booster 3F Ampoule (50 ml). Its label is used as a real-world example later in this guide. You flip the box over, read the full ingredient list, and "EGF" is nowhere to be found, even though the front of the pack mentions it. It has not gone missing. Growth factors are listed under their standardized INCI names, and those names look nothing like the acronyms used in marketing. This guide explains how to spot them, why they appear where they do, and what the current evidence can and cannot t...
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What Is a “Functional Cosmetic” in Korea? How to Read Wrinkle and Brightening Claims on K-Beauty Labels

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NARINFLA Journal · Ingredient Labels · Published 2026-10-01 · Last reviewed 2026-10-01 · 日本語 Short answer A functional cosmetic ( 기능성화장품 ) in Korea is a cosmetic that has been reviewed by, or reported to, the Ministry of Food and Drug Safety (MFDS) for one set benefit, such as brightening, wrinkle improvement or UV protection. It can then print that approved claim, but it is still a cosmetic, not a drug. Most of what a Korean functional cosmetic is allowed to say is printed in small Korean text on the side or back of the box. The front of a K-beauty box sells the story. The legal facts sit in a short line of Korean on the side panel: 기능성화장품 , "functional cosmetic". Those six characters tell you the product passed a government check for one specific benefit, and they also limit exactly what the product may claim. Here is how the system works, which numbers are fixed in Korean rules, and what the label does not promise. What does “functional cosmetic” mean in Kore...
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How to Choose a Moisturizer After 50: Korean Cream Labels

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Korean Skincare Labels BLOG NOTE · EN 08 How to Choose a Moisturizer After 50: Korean Cream Labels Read the formula behind “moisturizing” and “nourishing,” then choose a texture your skin actually welcomes. D By Dajeong Park · NARINFLA founder Published October 7, 2026 Evidence reviewed 2026-10-07 Illustrative moisturizing scene, not proof of a particular product result. CONTENTS 01 Does turning 50 mean you need the richest cream? 02 Which ingredient jobs should you look for? 03 What do Korean moisturizing and nourishing labels mean? 04 Can ingredient order tell you how strong a cream is? 05 How should you compare a gel, lotion, cream, and ointment? 06 Which reassuring label words still need caution? 07 What is the most useful way to try a new moisturizer? FAQ Frequently asked questions In this article Does turning 50 mean you need the richest cream? Which ingredient jobs should you look for? What do Korean moisturizing and nourishing labels mean? Can ingredient order tell you how st...
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