The effectiveness of laser hair reduction is intimately connected to the hair growth phases of follicles. Hair does not grow continuously—it progresses through three biological phases: anagen, transitional phase, and resting phase. Only hair in the growth cycle is vulnerable to laser treatment. During anagen, the follicle is securely embedded and supplied by the blood supply, allowing laser energy to be absorbed by the melanin in the fiber and channeled into the follicle. This thermal energy damages the follicle, blocking future growth.
Hair during the transitional stage is moving out of growth into rest. The root begins to retract and disconnects from the nutrient pathway, rendering it much less receptive laser energy. In the shedding phase, the hair is no longer growing and has lost its connection to the follicle. At this stage, no direct connection to the root, so the laser has virtually no ability to affect the structure.
Because individual strands are in the targetable stage simultaneously, эпиляция ног полностью a one appointment can only affect a fraction of the full complement in a treated zone. On average, only 15 to 30 percent of hair is in the active growth phase at any particular time. This is why multiple treatments are essential—typically administered every 4–8 weeks—to reach every hair when it reenters anagen.
Factors such as melanin content, skin tone, and the area being treated also strongly affect outcomes. Hair with high melanin density absorbs laser energy more effectively than thin, pale strands. Additionally, areas like the axillary and pubic zones typically exhibit a greater proportion of hairs in anagen, which is why they show quicker results compared to the face or back.
Understanding these phases helps set realistic expectations. Laser hair removal is not an instant solution. It demands persistence and regularity. Delaying treatments or expecting immediate results can result in frustration. By timing interventions according to the biological growth rhythm, clients maximize the chance of sustained smoothness and hair-free texture.