Blue 1 Lake (CI 42090)

Blue 1 Lake (CI 42090) is a synthetic, water-insoluble aluminum lake of Brilliant Blue FCF used as a cosmetic colorant. It gives a stable, vivid blue and keeps shade uniform in makeup, soaps, and other personal care items.
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Ingredient Snapshot

Overview
A synthetic dye that gives products a vivid, stable blue color.
Category
Color
Type
Pigment

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Delivers a bold blue tone for striking color payoff and visual uniformity in finished products, and helps formulas look vivid and appealing without dulling over time.

Uses In Skincare & Cosmetics

Common in eyeliners, nail lacquers, bath bombs, and gel-based color cosmetics for durable blue pigmentation.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally considered low risk in rinse-off and leave-on formulas; rare staining or mild irritation can occur, especially around sensitive areas. Usage levels are regulated in many regions, and manufacturers typically follow those limits. Patch test if you're dye-sensitive.

Is Blue 1 Lake (CI 42090) a Good Ingredient?

It's a widely approved cosmetic colorant with strong shade stability and low irritation potential when used as directed, which supports the Good rating. Performance is reliable for vivid blue tones, though a small number of individuals may experience sensitivity to synthetic dyes.

Products with Blue 1 Lake (CI 42090)

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