Blue 1(Ci 42090) vs Red 4
Blue 1(Ci 42090) and Red 4 are both added colour ingredients. Blue 1(Ci 42090) is found in 2 products while Red 4 appears in 1, making Blue 1(Ci 42090) the more widely used option.
Added colour
Blue 1(Ci 42090)
Added colour
2 products
Added colour
Red 4
Added colour
1 products
Top products with Blue 1(Ci 42090)
Top products with Red 4
Frequently asked questions
What is the difference between Blue 1(Ci 42090) and Red 4?
Blue 1(Ci 42090) is categorised as "Added colour" while Red 4 is categorised as "Added colour". They serve different functions in skincare formulations.
Can I use Blue 1(Ci 42090) and Red 4 together?
In most cases, these ingredients can be used together. However, always patch test and introduce new ingredients gradually.
Which is more common in skincare products?
Blue 1(Ci 42090) is found in 2 products, while Red 4 is found in 1 products in our database.