It's not a hard material. For natural ones it's good for strengthening, for extensions it's a bit dubious, it's bendable.
Global Fashion,
Hello! This gel is medium hard: on impact it does not break, and as if springing, but it does not bend as a soft material. With this gel do build-up hundreds of our customers, including masters, and all is great! Try it, we are sure you will not be disappointed. Regards, Global Fashion team.