Up to 8 weeks

Yes Training is extremely important to use this system it is not possible to use this system correctly without training

YES CombLine does not sell hair it is an application for use with all types and brands of hair.

It is a medical grade ISO 10993-5 certified glue.

This can vary it is determined by the thickness of the persons hair and the amount of hair being applied expect to use between one and two glue tubes for a full head of hair.