... the sun.5. For the wavy and curly, use some hair gel to help holding the texture after washing. And it's ... if in doubt.8. Never sleep on humid hair.9. Hair may tangle if general care directions are not followed properly. About Us ... -bonded hair, keratin hair, nail hair(U tip hair), stick hair(I tip hair), flat tip hair, V tip hair, loop ring, micro ring hair, link hair, PU weft, hair bulk ...