What is Basic Blue 99 used for?

Basic Blue 99 is a synthetic dye primarily used in hair coloring products to create blue shades. It is often found in semi-permanent or temporary hair dyes.

Is Basic Blue 99 safe for all hair types?

While generally considered safe for use in hair products, some individuals may experience skin irritation or allergic reactions. A patch test is recommended before full application.

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Basic Blue 99

Basic Blue 99 is a synthetic organic dye used in hair coloring products. It imparts blue tones to the hair, particularly in semi-permanent and temporary formulations. This ingredient works by depositing color molecules onto the hair shaft.

Hair dyeVegan

BenefitNone 0 / 4

RiskModerate 1.5 / 4

Sensitization i1.5 / 4

Risk of allergic contact dermatitis or immune-based reactions. Fragrance allergens, preservatives, botanicals, and some dyes may score here.

Irritation i1.5 / 4

Risk of short-term irritation — stinging, burning, dryness, redness, or discomfort. Common for strong actives, acids, retinoids, fragrances, and harsh surfactants.

Rated by SpottyLabs' ingredient methodology, independent of brands.

Things to watch

Potential for skin irritation
Can cause allergic reactions
May stain skin and clothing

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Frequently asked questions

What is Basic Blue 99 used for?: Basic Blue 99 is a synthetic dye primarily used in hair coloring products to create blue shades. It is often found in semi-permanent or temporary hair dyes.
Is Basic Blue 99 safe for all hair types?: While generally considered safe for use in hair products, some individuals may experience skin irritation or allergic reactions. A patch test is recommended before full application.