The hot oil treatment is just one application. The oil serum will last for a while depending on how much you use. I've been using the small bottle that came in the set with the hot oil treament for over a month and have barely used 1/4 of the bottle. I only use about a drop though per application. A little goes a long way.
answered 1 week, 4 days ago
I'm about half way through the bottle of serum and i used it about 8 times (at about 5 pumps each time since I have mid-back length hair.)
answered 3 weeks, 2 days ago