6.66

L'Oréal Professionnel iNOA 6.66 Carmilane Dark Deep Red Blonde is an ammonia-free permanent hair color powered by patented ODS (Oil Delivery System) technology containing 60% oil, delivering deep, intense red results with 100% grey coverage and up to 3 levels of lift . This revolutionary formula—also described as Blond foncé rouge profond—replaces traditional ammonia with an oil-based delivery system, providing a pleasant, odorless coloring experience while offering 48% more shine, 43% less hair porosity, and 20% more scalp hydration .

The 6.66 Dark Deep Red Blonde shade features Carmilane technology—a specialized formulation developed for achieving deep, powerful, and long-lasting red tones that stay vibrant between salon visits . Ideal for grey coverage, full-head applications, and dramatic color transformations, iNOA is a certified vegan product .

The vegan formula features a more fluid, manageable texture that is faster and easier to apply, mix, and rinse compared to previous iNOA formulations, with the tube made of 95% recycled aluminum for reduced environmental impact .

Mix at a 1:1 ratio (1 tube color to 1 part developer) with iNOA Oil Developer 20-volume (6%) for up to 2 levels lift or 30-volume (9%) for up to 3 levels lift . Development time is 35 minutes at room temperature. Carmilane shades should not be intermixed with any shades aside from iNOA Clear .

This product is intended for professional use only. To use, mix 60g of iNOA 6.66 Carmilane with 60g of iNOA Oil Developer, apply to dry, unwashed hair using sectioning techniques, process for 35 minutes, then emulsify gently, rinse thoroughly, and finish with iNOA Post-Color Shampoo or Metal Detox Shampoo . Always perform a patch test 48 hours before any coloring service.