CI 42090
Korean INCI: 청색1호 · Also written as: 블루1, 청색1호, Blue 1, Blue No.1
Base
What it is
Colorant
How it affects the score
Formulation ingredient (cleansing, viscosity, preservation). Not scored.
How to read it on the label
Common to most shampoos — no need to judge a product by its presence.
Ingredients are listed by descending concentration. Anything after the ~1% anchors (EDTA, hexanediol, preservatives) is effectively trace.
Check your own shampoo
Paste your full ingredient list to see this ingredient's position and the overall score.
Related ingredients
Green 3 · Base
Orange 205 · Base
Beta-Carotene · Base
CI 77491 · Base
CI 77891 · Base
Ultramarines · Base
※ For reference only, based on public ingredient data — not medical advice.