The lengthening procedure is a rather complicated and painstaking process. But the
extension of strands is possible even with a relatively short haircut. However, according to the recommendation of experts, the minimum hair length for extensions should not be more than twice the length of natural strands. An ideal option when native hair will grow to the shoulder (hairstyle bob). So, the transition between natural and extended strands will be as invisible as possible.
Every good beauty salon, including ours - Ivana Farisei in London, has a hair length chart for extensions. Most often, the range is from 30 cm to 70 cm. Of course, with a high qualification level, the spesialist can fulfill wishes within these limits. But it should be remembered that the shorter your natural haircut, the shorter the length of the donor sections can be increased.