Intercosmo Voilà 3C Intense 60ml in shade 4.24 Dark Iridi Copper Brown is a salon-grade permanent hair colourant from Italian professional brand Intercosmo. The 4.24 shade lays down a deep brown base lit by warm copper and iridescent reflections — flattering on natural medium-to-dark bases that want richer depth without going outright red.
About Intercosmo
Intercosmo is the professional haircare and colour brand of Italy's Cosmesi family group, developed and produced in Bologna for use in salons across Europe. The Voilà 3C Intense range is the brand's flagship permanent colour line, designed around a low-ammonia formula and the "3C" promise of Coverage, Care and Colour intensity.
Key features
- Permanent colour with up to 100% grey coverage: reliable, even results on white and grey hair
- Low-ammonia formula: reduces the typical sting and odour of permanent colour while still lifting and depositing pigment
- Vibrant, multi-tonal copper-brown reflect: the 4.24 shade is engineered to read as a glossy dark brown with copper iridescence in the light
- Conditioning agents: the 3C formula is built to leave hair feeling soft and looking shiny rather than dry and brittle after colouring
- 1:1½ mixing ratio: easy to dose with a developer for predictable salon-style results
Who it's for
Best for natural medium-brown to dark-brown bases (around levels 4–6) who want to refresh their colour with warmth and shine, cover greys, or move from a flat brown to something with more red-copper movement. Suitable for use at home only with experience or by a professional colourist.
How to use
- Carry out a strand and skin allergy test 48 hours before colouring.
- Mix Voilà 3C Intense with the recommended Intercosmo developer at a 1:1½ ratio in a non-metallic bowl.
- Apply evenly to dry, unwashed hair, working in sections from roots through to ends.
- Leave to develop for 30–45 minutes depending on the desired intensity and hair condition.
- Emulsify with a little warm water, rinse thoroughly, and finish with a colour-safe shampoo and conditioner.
Specifications
- Size: 60ml
- Shade: 4.24 Dark Iridi Copper Brown
- Format: Permanent cream colour (low ammonia)
- Brand: Intercosmo
- Made in: Italy



