4 week corrective treatment for porous, age-weakened hair. Redken Time Reset Porosity Filler helps extend & maintain the age-correcting benefits of the Time Reset Salon Service until your next appointment. This concentrated serum is formulated with Intra-Cylane to even porosity & helps porous, age-weakened hair combat five signs of ageing. It plumps from the inside out & helps rebuild a barrier of protection on the surface of fragile strands to significantly improve hair's resilience.