Cyanocobalamin

Cyanocobalamin is the synthetic, water-soluble form of vitamin B12. Cosmetics use it mainly as a red-pink colorant and a nutrient with marketing appeal, while evidence for topical activity stays limited, in line with a fair rating.
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Snapshot

Overview
Synthetic vitamin B12 used mostly to tint products pink.
Category
Color
Type
Colorant

Ratings

Overall Rating

Fair

Comedogenic Risk

None

Not typically evaluated for comedogenicity — no standardized rating available.

Is Cyanocobalamin a Good Ingredient?

Fair rating: primarily a pink-red colorant, with limited evidence for topical efficacy. Minor risks include rare sensitivity reactions and temporary staining of skin or fabrics.

Skin Benefits

Provides a pinkish hue to improve product appearance and supports a vitamin-forward marketing story. Topical performance benefits are not well substantiated.

Uses in Skincare & Cosmetics

Used to tint serums, creams, toners, and masks where a rosy color is desired.

Safety

Typically well tolerated at cosmetic levels, but some individuals may experience mild irritation or redness. Can impart transient pink tint to skin or towels. Those with known B12 hypersensitivity should avoid.