During which phase is hair most effectively treated with electrolysis?

The hair is most effectively treated with electrolysis during the anagen phase. This phase represents the active growth stage of the hair cycle, during which the hair follicle is robustly engaged in producing hair strands. In this stage, the hair is firmly anchored in the follicle and is receiving a supply of nutrients, making it more susceptible to the effects of the electrolysis treatment. The electric current used in electrolysis is designed to destroy the hair follicle, and doing so while the hair is actively growing leads to higher success rates in permanently removing the hair.

The other phases, such as catagen and telogen, are either transitional or resting phases where the hair is not actively growing, making them less suitable for effective treatment. In the catagen phase, the hair is beginning to detach from the follicle and is less viable for electrolysis, while in the telogen phase, the hair is in a resting state and may eventually shed, further reducing the efficacy of the electrolysis treatment.