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1-Naphthol and D&C Yellow No. 11 are both added colour ingredients. 1-Naphthol is found in 1 product while D&C Yellow No. 11 appears in 1, making 1-Naphthol the more widely used option.
Added colour
Added colour
Olia Hårfarge Metallic Silver 9.11
1-Naphthol is categorised as "Added colour" while D&C Yellow No. 11 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 D&C Yellow No. 11 is found in 1 products in our database.
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© 2026 Gracie. All rights reserved. Data sourced from Open Beauty Facts (ODbL) and EU CosIng.