
U-tip (Hot fusion) is a strand to strand method of attachment. The U-tip extension has keratin adhesive, when heated with Hair Extension Hot tool the keratin adhesive softens, envelopes your natural hair, encapsulating it in place. Since your hair is already made of 90% keratin the bond is strong.
U-tip (Hot fusion) hair extensions last anywhere from 4-6+ months and take about 2+ hours to install for full head.