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 24 products while Red 4 appears in 1, making Blue 1 (Ci 42090) the more widely used option.
Blue 1 (Ci 42090)
Added colour
Red 4
Added colour
Top products with Blue 1 (Ci 42090)
Cryo Rubber™ Soothing Face Mask with Allantoin
Travel-Size Start'r Set: Oily + Combo Skin Edition
Prejuvenation Firming Bakuchiol Serum for Preventative Aging
Cicapair™ Cooling Gel Moisturizer for Redness
Left Un-Red Reducer Face Serum for Redness and Blemish Prone Skin
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 24 products, while Red 4 is found in 1 products in our database.