Each hair follicle on the lower legs contains a hair shaft, a sebaceous gland, and an opening at the skin surface. When you shave, the blade cuts the hair at the surface, leaving a darker, thicker base inside the follicle. That pigmented base is visible through the follicle opening, creating the characteristic dotted look. The American Academy of Dermatology notes that shaving and other temporary hair removal methods leave the deeper portion of the hair shaft intact.
Over time, dead skin cells and sebum accumulate around these follicle openings. The buildup widens the pore, traps oxidized oil inside, and exaggerates the contrast between the dark follicle and the surrounding skin. Frequent shaving also irritates the follicle wall, which can darken further as a healing response in the form of post-inflammatory pigmentation.
Patients with coarser hair, darker hair against lighter skin, dry or thickened skin, and a history of folliculitis are most prone to the strawberry pattern. The only way to remove the pigmented follicle base permanently is to stop the follicle from producing hair, which is what laser hair removal in Cambridge, MA is designed to do.
