Two methods, one goal
Keratin bonds use heat to fix small strands to your hair. The ice gel method uses a cold gel bond. Both add length, volume or both.
Choosing between them
Your hair type, density and daily routine decide which works better. Fine hair, for example, may suit smaller sections and lighter bonds.
Visiting regularly
Extensions need a maintenance visit as your hair grows. A nearby studio makes that easy, and the stylist will suggest a schedule.