"Weaves can generally last anywhere from 6 to 12 weeks," reveals Elena. "The main factor in deciding what type of weave to go for is usually your current hair condition." If your hair is strong, and not too dry or damaged, then long-term weaves (i.e. a full head of extensions) can be a viable option. "If you've got brittle strands due to heat damage or over-styling, try a half-weave,".