Electrolysis requires more than one treatment to be successful. Only a portion of the total amount of hair growing in an area will be visible at any given time. The electrologist uses the hair shaft as a flag to know which follicles to treat. Only when all of the follicles have shown their hair and each one treated will electrolysis be 100% successful. Another factor can be regrowth. Sometimes a follicle will need more energy than was applied in a single treatment before it dies. In such cases the hair grows back as a finer hair. The idea is to use as much energy as possible to kill the hair, but not so much that the skin traumatized or the client is uncomfortable.
