Blue 1 Lake is an insoluble pigment form of the synthetic dye Blue 1 (Brilliant Blue FCF), produced by precipitating the dye onto a metal salt substrate such as aluminum hydroxide. It is used to impart blue or green hues to cosmetic and skincare formulations and has no therapeutic skin benefit.
| Reported effect | How often | Notes |
|---|---|---|
Contact irritation | Rare | Mild transient redness or stinging possible, mainly in sensitive or compromised skin. |
Allergic contact dermatitis | Rare | Hypersensitivity to the dye component has been occasionally reported. |
Temporary skin or product staining | Uncommon | Pigment may transiently tint skin, especially at higher concentrations. |
Eye irritation | Rare | Possible if used in products near the eye area and accidental contact occurs. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.