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The Science of Hair Shine
Radiant hair is infinitely desirable, yet it can be so elusive. With Elixir Ultime, the scientists at Kérastase have harnessed the power of shine to infuse every strand with undeniable brilliance.
Sometimes it feels like a losing battle trying to achieve and maintain shiny hair. Between heat styling, product residue, environmental factors and other stressors, hair can easily become dull and matte, a frequent disappointment for those who prefer a glossier look.
But there is a science behind shine, and it is a code we’ve managed to crack. Here is some of the knowledge we’ve used to create an iconic product, now empowered to take shine to new levels of intensity.
Two Types of Shine
Not all shine is created equal. When light hits the hair, it can create two types of reflection—specular and diffuse. Specular reflection is symmetrical, creating a bright, mirror-like shine. Diffuse reflection scatters light, weakening its intensity. How much of each type of reflection you see depends on the condition of the fiber. Rough surfaces produce more diffuse reflection, which is why damaged hair often appears dull.
The Golden Ratio
The ideal conditions for shine yield a high ratio of speculative to diffuse reflection, and Elixir Ultime is designed to encourage that high ratio by smoothing and nourishing the fibers instantly. Speculative Reflection = Overall Shine Diffuse Reflection
Enemies of Shine
Dirt
Deposited on the hair in the form of dust or product residue, dirt disrupts the hair’s ability to reflect light, causing it to appear dull and matte.
Sebum
Natural oils from the scalp can seep onto the hair when it hasn’t been cleansed, clouding the surface of the fiber and reducing the hair’s capacity for intense shine.
Friends of Shine
Marula Oil
Extracted from seeds inside the hard kernel of fruit from the Marula tree, this precious oil has incredible moisturizing and nourishing properties. It softens and soothes the hair, promoting a high level of light reflection, which appears to the eye as intense shine.
Camellia Oil
Taken directly from the seeds of the Camellia oleifera flower, precious Camellia oil is widely revered for its nourishing qualities. Comprised largely of oleic acid, linoleic acid and vitamin E, its nutrients can smooth and calm any hair type, creating the ideal conditions for high shine
Elixir
Ultime Routine
Pure shine, opulent volume the must-have range to beautify hair, putting the power of Marula and Camellia oils at the heart of its formula. Kérastase created a customized 3-step beauty routine: cleanse, treat and texturize with carefully conceived methods for shiny and extremely radiant hair.
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Rendez-vous at the salon Find your nearest salon
Far more than the place to get your root touch-up or an occasional trim, book an appointment at your nearest Kérastase salon for a complimentary personalized hair diagnosis.
