Link-D Bond Sealer N°4 is a serum for the hair for professional and home use. It creates a protective barrier on the hair’s cuticles, which is capable of maintaining moisture and prolonging the repairing effect on the disulphide bridges created by the previous Link-D steps. It gives hair gloss and protects its shine by acting as a UV filter. Directions: Apply on damp hair Distribute with a comb Do not rinse Link-D Bond Sealer N°4 is best used after a treatment with Link-D no.2 or no.3 Key Ingredients: Arginine Complex based on Keratin, Bamboo Leaf Extract and Laccase Liposomes Soy & Wheat Amino Acids Plant proteins Introducing Link-D the only plex system you will ever need! WHAT IS IT?A 5 step system that RESTRUCTURES the hair fibers, PROTECTS the hair from damage and strengthens the hair structure. Can be used alone as a premium treatment or with any technical service. THE BENEFITS? No change of the processing time. Doesn’t interfere with final results. Doesn’t change application procedure. No change to peroxide strength. Can be used with multiple product portfolios. HOW DOES THE SYSTEM WORK? Hair keratin is unique because it’s made up of many Sulphur containing amino acid units, CYSTEIN. CYSTEIN can form strong links between two keratin chains, these links are also known as disulfide bonds. Disulfide bonds are essential for the strength, elasticity and shape of the hair and can only be broken during technical services.
