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1-Naphthol and CI 14700/RED4 are both added colour ingredients. 1-Naphthol is found in 1 product while CI 14700/RED4 appears in 1, making 1-Naphthol the more widely used option.
Added colour
Colour pigment
Olia Hårfarge Metallic Silver 9.11
1-Naphthol is categorised as "Added colour" while CI 14700/RED4 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 14700/RED4 is found in 1 products in our database.
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