Chronologiste is a premium home hair treatment from Kerastase, sold at select salons in Singapore for around S$200 and each set is good for 10 treatments. This home treatment is supposed to pack the most amount of active ingredients in 2 separate components that are only combined just before use. That works out to S$20 per session, a lot cheaper than in-salon treatments but quite troublesome to measure and combine the ingredients every time you use it.
It has a really soothing scent that makes you feel like you are in a spa, quite masculine even, so it's pretty much a unisex home hair treatment. It is also the only Kerastase treatment that nourishes both the scalp and hair at the same time. After just 1 treatment, my hair is smooth, shiny and split ends visibly repaired. All this with practically no hair fall at all, great for regular use, I am thinking about once a month. You can also use this on permed/rebonded hair. Think I will be making the switch to this from now on.