For starters, it's important to think about heat application, and how comfortable you are with heat on or near your hair. U-tipped fusion extensions can only be applied using a heating tool to melt the keratin. ... In that case, I-tipped hair may be your best choice.
What's the difference between U tip and flat-tip?
Flat-tip is a very similar type of keratin hair extensions to U-tip, both using the heating method, just different in shape, Flat is a flat shape.Jan 18, 2021