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1-Naphthol and CI 42090 are both added colour ingredients. 1-Naphthol is found in 1 product while CI 42090 appears in 64, making CI 42090 the more widely used option.
Added colour
Colour pigment
Olia Hårfarge Metallic Silver 9.11
1-Naphthol is categorised as "Added colour" while CI 42090 is categorised as "Added colour". They serve different functions in skincare formulations.
In most cases, these ingredients can be used together. However, always patch test and introduce new ingredients gradually.
1-Naphthol is found in 1 products, while CI 42090 is found in 64 products in our database.
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