Is Red No. 40 safe in cosmetics?

The FDA has approved Red No. 40 (allura red) for cosmetic use. Published safety reviews do not raise major toxicity concerns at the concentrations used in beauty products, though some individuals report sensitivity to synthetic dyes.

Can Red No. 40 stain skin?

Red No. 40 is designed to color products and may tint the skin temporarily, but it will wash off with normal cleansing and does not cause permanent staining.

colorant

FD&C Red No. 40

Watch if sensitive·Strong evidence·INCI: CI 16035

An FDA-approved synthetic colorant used in cosmetics to create red shades. Dye sensitivity can occur in sensitive individuals, though it is uncommon. Generally well tolerated at regulated cosmetic levels.

Questions

Is Red No. 40 safe in cosmetics?: The FDA has approved Red No. 40 (allura red) for cosmetic use. Published safety reviews do not raise major toxicity concerns at the concentrations used in beauty products, though some individuals report sensitivity to synthetic dyes.
Can Red No. 40 stain skin?: Red No. 40 is designed to color products and may tint the skin temporarily, but it will wash off with normal cleansing and does not cause permanent staining.

Products with FD&C Red No. 40

References

Cosmetic information for general education, not medical advice. A verdict is a reading of the published evidence, never a guarantee for your skin: any ingredient can irritate someone, so patch test new products and see a professional if you react. Concern is graded on cited evidence, never on hazard-score lists. See how we score.