FD&C Blue No. 1

1% line markerAI-analyzed

INCI: CI 42090 (FD C BLUE NO 1)

colorant

What it does

CI 42090 is a synthetic blue dye, also known as FD&C Blue No. 1, commonly used in cosmetics to impart a blue color to products.

No specific concern data available

Safety summary

Generally considered safe for cosmetic use, but like all dyes, some individuals may have sensitivities.

1% line marker

This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.