Under the claim “Vibrant soul colour”, the brand introduces four new shades of Biokera Natura Color that fuse copper, red and violet undertones with a naturally inspired beauty.

Salerm Cosmetics presents SIENNA, the new Hair Color Collection from their range of dyes Biokera Natura Color, a proposal that stems from the connection between the depth of the earth and the vibrant luminosity of the Mediterranean. Under the claim “Color with a vibrant soul”, The collection explores a palette of warm and sophisticated shades that bring the essence of the organic to hair through shades of coppery, reddish and purple.
SIENNA advocates a way of understanding color in which nature, intensity and sophistication coexist in balance. Warm terracotta tones, deep reds and luminous violets combine to create results full of dimension, depth and brightness, while maintaining a contemporary aesthetic that is connected to nature.
Four new tones to express color
The new collection incorporates four shades of Biokera Natura Color, Designed to create different expressions of color and work on the hair for multidimensional results:
- – 7/43 Rubio Cobrizo Doré, a warm and luminous tone.
- – 7/60 Rubio Rojizo, which adds intensity and depth.
- – 7/9 Rubio Violeta, For a sophisticated and vibrant interpretation of the cold nuances.
- – 5/96 Castaño Claro Violet Red, which combines depth with purple and reddish reflections.

The SIENNA technical proposal allows these shades to be transferred to different color-tinting techniques. Among them, a combination of 7/43, 7/60 and diagonal veil techniques generating a luminous and velvety result, in which warm nuances blend smoothly to add depth and sophistication.
The second proposal works one Multidimensional technique with 5/96 and 7/9, By creating different sections and alternating tonalities to achieve a luminous and balanced violet with depth and maximum brightness.
Biokera Natura Color: 85% ingredients of natural origin
SIENNA is developed based on Biokera Natura Color, Salerm Cosmetics' oxidation colorant that combines professional technology with a formulation of up to 10% 85% ingredients of natural origin, According to ISO 16128.
Its formula is free of parabens, silicones, PPD and resorcinol and contains certified organic vegetable oils sweet almonds, argan, macadamia, wheat germ, raspberry and castor. It is an oxidation coloration with Volatile ammonia, Designed for professional work in the salon.
Color as a creative expression
For the stylists at Salerm Cosmetics, SIENNA represents an opportunity to explore color from a more creative and personalized perspective.
“With SIENNA, we wanted to work on color from a multidimensional perspective. The four new shades allow us to play with different intensities and combinations to create results that are not flat but full of nuances. The key is finding the balance between the strength of the color and the brightness of the hair, adapting each technique to the personality and style of each client.”
The result is a collection designed for the professional who understands color as a tool of creativity, expression and transformation, and that seeks to create colors with character without sacrificing the naturalness of the nuances.
SIENNA: color with a vibrant soul
With this new collection, Salerm Cosmetics continues to evolve its professional color offering through Biokera Natura Color, By expanding the creative possibilities of color and exploring new ways to interpret warm, reddish and violet tones.
SIENNA is land, light and color. A palette inspired by the Mediterranean nature that transforms each shade into a new form of expression. It is color with a vibrant soul.
