Common hormonally active areas include the chin, jawline, neck, upper lip, sideburns, chest, abdomen, linea alba, inner thighs, bikini, Brazilian, and perianal areas.
These areas are driven by hormones, not a fixed number of follicles. New hair can continue to develop even while you are treating.
This is not necessarily treatment failure. It is the nature of the condition.
The goal is to reduce, maintain, and stay consistent.
The bikini and Brazilian should be approached the same way. These areas often behave like beard or chin hair, dense, coarse, and hormonally influenced.
In early phases, more frequent treatment may be needed to stay ahead of growth, especially when density is high or the area is being irritated by shaving, picking, or ingrown hairs.