HC Blue No. 15
HC Blue No. 15 is a synthetic organic compound primarily used as a semi-permanent hair dye. It is designed to deposit blue color onto the hair shaft without requiring an oxidative process. This ingredient is commonly found in formulations for temporary and semi-permanent hair coloring.
NoneHair dyeVeganEvidence: Medium
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 / 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 or allergic reactions
- Can temporarily stain skin and other surfaces
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Frequently asked questions
- How long does hair color from HC Blue No. 15 last?
- Hair color from HC Blue No. 15 is semi-permanent, meaning it will gradually fade over several shampoos. The exact duration depends on hair type, porosity, and frequency of washing.
- Is HC Blue No. 15 safe for all hair types?
- HC Blue No. 15 is generally considered safe for most hair types. However, a patch test is always recommended to ensure no individual sensitivity or allergic reaction occurs before full application.
Spotty Labs
