Rusk In 10 Permanent Cream Color (3.4 oz) - 4NN Medium Intense Natural Brown - Intense Brown, Express Time

It's time to drastically shorten your color appointments without sacrificing a single ounce of color quality-introducing Rusk's revolutionary IN10 Permanent Cream Color, a salon-grade formula that achieves rich, deep, and permanent results in a mere 10 minutes. The specific shade, 4NN Medium Intense Natural Brown, is an elevated "Double Brown" tone that features double pigments of Yellow, Red, and Blue to deliver superior depth and rich intensity that is specifically engineered for maximum gray coverage. This is the time-saving technology that allows you to address the most persistent color challenge-stubborn, resistant gray hair-by giving you true 100% gray coverage without the lengthy processing of traditional color. This dense, powerful cream is the secret to a fast, flawless, and deeply satisfying permanent brown service.

The brilliance of the Rusk IN10 system is its perfect synergy of speed and hair health. This advanced formula is generously fortified with a proprietary Terra Marine Complex(TM) and 5 essential Amino Acids (including Arginine, Serine, and Soy Protein), which work overtime to condition and strengthen the hair fiber during the quick 10-minute color deposit. This nourishment ensures that your hair emerges from the process with a glossy, conditioned finish, looking healthy and vibrant, not stripped or damaged. A critical differentiator of this system is that it's non-progressive, meaning the color stops developing after the recommended 10-minute window. This eliminates the guesswork and stress of over-processing, providing reliable, true-to-tone Medium Intense Natural Brown results every single time.

The 4NN shade is categorized as an "Intense Natural" or "Double Natural," making it your most potent ally against the most resistant gray strands. Its rich, balanced pigment base (Yellow, Red, and Blue pigments) ensures a smooth, non-reflective brown that looks incredibly natural but with added depth and intensity. Designed for professional efficiency, this cream color is easy to select, mix (standard 1:2 ratio with 20 Volume Developer for the fastest results), and apply, fitting perfectly into an express color services menu. This low-ammonia, vegan, and cruelty-free formula is all about delivering high-performance, beautiful brown color with superior shine and condition in half the time. Give your clients the gift of a rich, deeply satisfying Medium Intense Natural Brown that lasts, achieved in the time it takes to brew a fresh cup of coffee.