FD&C Blue 1 (CI 42090)

FD&C Blue 1 (CI 42090) is a synthetic triarylmethane dye recognized as a water-soluble cosmetic colorant for toiletries, makeup, and topical drugs. It gives vivid blue tones, fine-tunes blends into teals or purples, and stays stable in water-based formulas.
Like this ingredient?

Ingredient Snapshot

Overview
A synthetic dye that gives products a vivid blue color.
Category
Color
Type
Colorant

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Provides intense blue hues and enables precise blending to create teals or purples. Color holds well in finished formulas for a consistent appearance.

Uses In Skincare & Cosmetics

Common in serums, toners, and shampoos to impart a cool blue look. Also used in mouthwashes and gel moisturizers to boost visual appeal.

Comedogenic Rating

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

Safety

Low irritation potential for most users, with occasional sensitivity possible. Should be used within approved concentration and purity specifications.

Is FD&C Blue 1 (CI 42090) a Good Ingredient?

Good due to vivid, controllable blue hues and strong stability in water-based formulas, though it provides no direct skin benefits.

Products with FD&C Blue 1 (CI 42090)

Related Ingredients