Hair serum with innovative Hair Refiller technology instantly restores hair prone to breakage. It strengthens fine and fragile strands, improves their structure and the effect lasts up to 5 washes. Thanks to the content of keratin amino acids, it acts from the inside, strengthening the hair fiber and at the same time smoothing the cuticle by filling in weakened areas. The result is stronger, smoother and visibly healthier hair.