Matrix Biolage Fortifying Conditioner 16.9 oz is an essential step in the unique Biolage Fortifying System. It strengthens weak, over-worked hair as botanicals deeply condition. Biolage Fortifying Systeme of shampoo, conditioner and treatment, with patented Cerafusion technology, reduces hair breakage up to 90%. It replaces natural ceramides (intercellular bonds) to fill in weak spots created by brushing, styling and chemical services. Hair is strengthened from roots to ends in just ten days. Repeated use continues to improve hair's healthy look and natural shine.