Novathrix Traitement is a leave-in scalp treatment from Phyto Paris designed to address chronic or occasional hair thinning in both men and women, rather than being a general-purpose leave-in conditioner. It comes in single-dose vials applied directly to the scalp and left in — Phyto's own instructions specify not rinsing it out — which puts it in the same category as other density and anti-hair-loss scalp serums rather than styling leave-ins.
The formula is built around a concentrate that Phyto describes as roughly 99% ingredients of plant origin, centered on celery seed extract along with Globularia plant stem cell extract, tulip flower extract, and Baikal skullcap root extract, which the brand positions together as supporting scalp health and hair density over time rather than delivering an immediate cosmetic effect. In the brand's own testing, volunteers using the product three times a week for three months reported hair that felt stronger and less prone to breaking, though — as with most hair-density treatments — Phyto frames the three-month usage window as necessary to see those results, not something that shows up after a few applications.
Because it's a leave-in scalp treatment rather than a rinse-out mask or a styling product, it fits into a hair-care routine as an added step after shampooing rather than a replacement for a conditioner: apply after washing, focus the product on the scalp itself, and continue with normal styling afterward.
