Reference summary — not medical advice or a personal risk estimate.
Semi-permanent hair dye
Non-oxidative hair colouring that fades in 4–12 washes; lower carcinogen exposure than permanent dye.
Also known as: temporary hair color, wash-out hair dye
IARC-classified factors documented in this product
- Byproduct of ingredients · Source: IARC
Some formulations contain formaldehyde-releasing preservatives.
How to read this page
A factor appearing on this page means it has been documented in this product category — through EPA / FDA testing, IARC monographs, or regulatory recall records. Whether it presents a meaningful personal risk depends on the specific formulation, dose, and how you're exposed. Click any factor to read what science actually says about it, and where.