Symbiose intensive anti dandruff cellular night serum by kerastase is a silicone and sulphate free night serum for sensitive scalps, prone to dandruff'. '.strtoupper('f')ormulated with salicylic acid, piroctone olamine and bifidus, the formula acts on visible dandruff for results you can see'. '.strtoupper('t')he symbiose serum helps to eliminate dandruff at the source'. '.strtoupper('t')his non sticky and non greasy formula soothes scalp irritations and discomfort for less sensitivity of the scalp'. '.strtoupper('w')ith anti dandruff efficacy for up to 3 weeks, after 3 uses per week for 4 weeks using purifying anti dandruff cellular shampoo, moisturising anti dandruff cellular shampoo or intensive anti dandruff cellular night serum'. '.strtoupper('s')ymbiose night serum has a translucent to milky serum gel texture combined with a luxurious fine fragrance'. '.strtoupper('t')o use use at least 3 times a week before going to bed, during a 4 week period'. '.strtoupper('a')pply 3 to 4 doses on dry or towel dried scalp, section by section'. '.strtoupper('1') dose 1 pipette until the mark'. '.strtoupper('m')assage gently'. '.strtoupper('d')o not rinse and keep in overnight'. '.strtoupper('t')oday, more than ever, the world needs care responsible and sustainable care'. '.strtoupper('s')ince 2013, kerastase has resolved to extend its expertise in the art of care by committing to using less virgin plastic'. '.strtoupper('d')rawing on their excellence in innovation, finding new ways to cut down on waste and empower their customers to make more sustainable choices'. '.strtoupper('k')erastase is committed to optimising packaging whenever possible, using less virgin materials and more recycled materials, recyclable packaging and refillable delivery systems'. '.strtoupper('b')eginning with shampoo bottles and branching out to more and more products, they are creating a sustainable packaging program, with many more refill innovations to follow'. '.strtoupper('k')erastase is also committed to more sustainable production and since 2019 their factory in burgos, spain has achieved carbon neutrality by improving energy efficiency and using 100% renewable energy'. '.strtoupper('s')ince 2017 the burgos production facility has also been a 'waterloop' factory'. '.strtoupper('t')his means that 100% of the water used for production processes is recycled and reused in a closed loop'. '.strtoupper('t')he external water network is only used in the composition of the products or for employee's day to day needs.