Specially formulated together with today's most influential extension specialists, b3 Extension Repair System is the industry's first system to maximize the life of extensions. From first installation to every move up appointment, this breakthrough system ensures the client's own hair and extensions look seamless and feel healthy while preventing breakage at anchor points and without loosening bonds or adhesives. The end result is extension work that looks flawless between appointments and adds up to an 2 additional months of longevity.