Blondis New York Multi Protein Smoothing System 0% Formaldehyde. Blondis Multi Protein Smoothing System formula contains a combination of exotic ingredients. The smoothing treatment is formulated to bond your hair and create a protective layer around each strand, eliminate frizz and sealing the cuticle, giving the hair shiny, silky and smooth fabulous look. The Multi Protein treatment uses ingredients to help the hair not only to look healthy from the outside but to feel from the inside. The treatment is an easy process leaving the hair hydrated and smooth. (Lasts up to 5 months)