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1-Naphthol and CI 16035 (RED 40) are both added colour ingredients. 1-Naphthol is found in 1 product while CI 16035 (RED 40) appears in 3, making CI 16035 (RED 40) the more widely used option.
Added colour
Colour pigment
Olia Hårfarge Metallic Silver 9.11
1-Naphthol is categorised as "Added colour" while CI 16035 (RED 40) 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 16035 (RED 40) is found in 3 products in our database.
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