The technique used differs depending on whether the face or body is being treated. It is usual to treat each facial hair individually and then remove it from the follicle. Care must always be taken to also remove the inner root sheath to prevent it turning inside out in the follicle mouth. If this occurs and it is not removed, a pustule may develop. This occurs because the inner root sheath blocks sebum flow and allows bacteria to breed.
When working on the body, once the working point for intensity and duration has been reached, it is permissible to treat several hairs in a row with current and then go back and remove all of them. Working in this way speeds up the treatment, as the beauty therapist does not stop to remove individual hairs, but several at a time. If the inner root sheath is left in the follicle mouth there is less chance of a pustule forming as the sebaceous glands are smaller.
As you become more skilful, you may notice that when treating hairs in an alternate pattern, in an area that is densely packed, the in-between hairs also have been loosened. This is because the current tends to overlap slightly onto the follicle of the middle hair, also loosening it. Similarly, when a fine hair is situated next to a strong hair, fine hair may also be loosened. However, do not deliberately over treat a hair in an attempt to also treat its neighbour, as this may cause scarring.