In 1992, Great Lengths International developed and patented the first pre-tipped, synthesized keratin bond polymer. The GL Synthesized Keratin Bond molecular structure is specifically designed to mimic the molecular structure of human hair. The result gives the Great Lengths bond functionality that is not available in any other hair bonding compound in the marketplace. The functionality is the Great Lengths bond has the ability to expand and contract with human hair. For example, when you wash your hair or get it wet, the hair shaft expands. When it dries it contracts. Bonds that do not possess such function will soon begin to shed the extensions and ultimately slide off the client’s natural hair completely because the bond is being stretched with no capacity to contract each time the client’s natural hair expands and contracts. This is a Great Lengths exclusive feature. The extensions are virtually impossible to detect and offer tremendous versatility. Visit the Great Lengths Website here.