INSIGHT Rebuild Hair Filler Serum

A 98% natural Hair Filler Serum — the first step in INSIGHT's professional hair reconstruction system, developed to restore the integrity of the hair fiber and its protein content on dry, brittle, and very damaged hair. Derived with ozonated water and organic oils.

Its neutral pH helps open the hair cuticle, allowing the formula's naturally derived ingredients to penetrate the hair cortex for visible reconstruction. Pair with the Hair Cuticle Sealer to complete the Rebuild treatment.