Kerastase Chronologiste Products Kerastase Chronologiste products comprise a comprehensive line of scalp and hair treatments that we absolutely love here at Serenity Salon. Thru the rest of February we’re offering all our Kerastase Chronologiste line at 20% off regular retail pricing. Why do we love and support this line? The reasons are many, but it really comes down to Kerastase providing unbeatable revitalizing and exfoliating treatments. From pre-cleansing exfoliators, to shampoos and deep conditioning treatments – if you are in need of transformative hair care, look no further. The Kerastase line can be thought of as a line devoted to “total hair care”. From scalp stimulation and nourishing damaged ends, to anti-oxidant rich.