INCI ingredient

7-naphthalenediol

Also listed as: 2,7-naphthalenediol

7-naphthalenediol appears on 4 ingredient lists in our database, most often in hair dyes.

What it triggers

Vegan originNot sureorigin not on file
FragranceNonot a perfume ingredient
ParabenNonot a preservative of this family
SulfateNonot a sulfate surfactant
SiliconeNonot a silicone
AlcoholNonot a drying alcohol

What it does

7-naphthalenediol appears on 4 ingredient lists in our database, most often in hair dyes.

It does not belong to any of the six groups we check, so it never changes a verdict.

We have not written the plain-language note for this ingredient yet; the facts above come straight from how it is classified.

Functions: hair dyeing

Products with 7-naphthalenediol

in 4 products

Showing 4 of 4 products with this ingredient, most scanned first.

In the EU ingredient database

Functions listed by CosIng

hair dyeing

hair dyeing: Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, permanent, depending on the length of time the colorant remains on the hair.

CAS 582-17-2 · EC 209-478-7

EU regulation

Listed in Annex III (ref. 216) of the EU Cosmetics Regulation, maximum concentration (b) 1,0 %. (a) Hair dye substance in oxidative hair dye products (b) Hair dye substance in non- oxidative hair dye products III/216 (a) To be printed on the label: The mixing ratio. “ Hair colourants can cause severe allergic reactions. Read and follow instructions. This product is not intended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irritated and damaged scalp, — you have ever experienced any reaction after colouring your hair, — you have experienced a reaction to a

Source: CosIng, European Commission. Informative, no legal value; the regulation text is the reference.

Classification from the INCI name; product lists from Open Beauty Facts.Report a mistake