JA Tool

Cosmetic Ingredient Checker Lite: Guide

Paste an ingredient list and review quick flags and short notes (no storage).

What it does

Splits an INCI/JP ingredient list into individual items
Shows quick flags for fragrance, preservatives, alcohols, and acids
Runs locally in your browser, no storage

Open the tool 日本語ガイド

How to use

Copy the ingredient list from the package or official site
Paste it into the tool and click Check
Review flags and short notes for the ingredients you care about

Tip: ingredients listed earlier are often present in higher amounts.

Notes (limits)

This is not medical advice or a diagnosis tool.
“Good/bad” depends on individual skin; patch testing is recommended if unsure.
Variant names and synonyms may result in missing flags for some ingredients.

Common checks

If you dislike fragrance, look for the fragrance/allergen flag
If you dry out easily, compare alcohol flags between products
Sensitive skin may want to note acid-based actives

Keywords: cosmetic ingredients, ingredient checker, INCI list, sensitive skin ingredients