oVertone pigmented conditioners are all semi-permanent and will fade with each wash as soon as you stop using them. That said, the color may not wash out 100% with shampoo alone. How fast the color fades depends on many factors, including the shade used, number of applications, the health of your hair, starting hair color, and how often you heat treat it.
For example, if you consistently use Extreme Silver on your blonde hair for months and then decide to stop using it, the color will slowly fade with each wash but will likely not come out completely with shampoo alone. On the other hand, if you put Rose Gold on your highlighted hair once, that small amount of light color may completely wash out over the course of a few shampoos. We have plenty of tips and tricks for fading color here.