HC BLUE NO. 2

AI-analyzed

hair dyeing

What it does

HC Blue No. 2 is a synthetic direct dye used in hair coloring products. It imparts a blue shade to the hair without requiring an oxidative process.

Skin Concerns

May aggravate

sensitivityredness

Safety & Science

Safety summary

Generally considered safe for use in hair dyes. Patch testing is recommended for individuals with sensitive skin or known allergies to dyes, as it can cause irritation or allergic reactions.

CAS Number

33229-34-4

Found In Products

Related Ingredients

For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.