Ci 42090
Ci 42090 is a cosmetic colorant ingredient. It’s in 498 products on Poliage, most often body wash, exfoliant and shampoo. Avoid lists on Poliage that include it: none.
Updated October 21, 2026
In plain English
A synthetic blue dye (FD&C Blue 1). Colors products.
What it does
Contains Ci 42090: cosmetic-colorant
Function listed in CosIng
Source: CosIng, the European Commission cosmetic ingredient database, ref 32756, accessed October 22, 2026. Also listed as blue 1, fd c blue no 1, fd c blue 1 and blue no 1.
Products that contain Ci 42090
Head & Shoulders
Shampooing antipelliculaire Menthol Fresh
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire Menthol Fresh (maxi pack)
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
Head & Shoulders
Shampooing antipelliculaire pour homme (maxi pack)
Lists fragrance, fragrance allergens, sulfates, silicones, coconut derivatives
HEAD & SHOULDERS
Shampooing Classic 2en1 Anti-Pellicullaire
Lists fragrance, fragrance allergens, sulfates, silicones, salicylic acid, coconut derivatives
Auchan
Shampooing douche Men Boost 3 en 1
Lists fragrance, sulfates, coconut derivatives
Cora
Shampooing douche Relax
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cora
Shampooing Doux cheveux gras Menthe & citron
Lists fragrance, fragrance allergens, essential oils, sulfates, coconut derivatives
Cora
Shampooing Doux cheveux normaux Pomme & tilleul
Lists fragrance, fragrance allergens, sulfates, coconut derivatives
Cosmia
SHAMPOOING et DOUCHE AU SEL MARIN
Lists fragrance, exfoliating acid, sulfates, coconut derivatives
Pixi
Sheer Cheek Gel
Blush · None of Poliage’s flag groups listed
Jeffree Star Cosmetics
Shiny Trap Lipstick
Lip · Lists fragrance
Unilever
Shock, eau de glacier & menthe extrème
Lists fragrance, fragrance allergens, exfoliating acid, sulfates, formaldehyde releasers, coconut derivatives
CIEN
Shower gel melon
Lists fragrance, coconut derivatives
Unilever
Sig bdb def active 400ml
Lists fragrance, fragrance allergens
Unilever
Signal Bain de Bouche Défense Active Antibactérien
Lists fragrance, fragrance allergens, essential oils
Unilever
Signal Dentifrice Enfants 3-6 Ans Fruigolo 3x50ml
Lists fragrance
Unilever
Signal Dentifrice Expert Protection Complet 75ml Lot de 2
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Expert Protection Haleine Pure
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Expert Protection Haleine Pure 75ml Lot de 3
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Kids 3-6 Ans Fraise Gaga 3x50ml
Lists fragrance
Unilever
Signal Dentifrice Soin Fraîcheur & Blancheur Crystal Gel 2x75ml
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Soin Fraîcheur & Blancheur Crystal Gel 3x75ml
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Soin Fraicheur & Blancheur Crystal Gel Lot 3X75ml
Lists fragrance, fragrance allergens, sulfates
Unilever
Signal Dentifrice Soin Fraicheur & Blancheur Crystal Gel lot de 8 X75ml
Lists fragrance, fragrance allergens, sulfates
Related guides
How to read an ingredient list
What the ingredient list on a beauty product tells you, what the names mean, and what it leaves out, using FDA and EU labeling rules.
Does ingredient order show how much is in a product?
Ingredient lists run from most to least, but only down to 1%. Below that, any order is allowed. What the order shows and what it hides.
How do you patch test a new product?
What the AAD, FDA and DermNet say about testing a small area, the FDA hair dye skin test, in-office patch tests, and contact allergy basics.