Darker skin types and dense, coarse hair benefit from what type of pulse duration?

Darker skin types and dense, coarse hair benefit from longer pulse durations because longer pulses allow for a more effective and safer treatment. In laser hair removal, pulse duration refers to the length of time the laser energy is applied to the target area.

Longer pulse durations are advantageous when treating darker skin types because they minimize the risk of thermal injury to the surrounding skin while still effectively targeting the hair follicle. With darker skin, there is a higher concentration of melanin, which can absorb laser energy. By using a longer pulse duration, the energy is delivered slowly enough to allow for heat accumulation in the hair follicle, leading to effective hair removal, while preventing excessive heat buildup in the skin that could cause damage.

This approach contrasts with shorter pulse durations, which can be too quick for the hair follicle to absorb sufficient energy before the surrounding skin gets too hot, potentially leading to unwanted side effects like burns or hyperpigmentation. Thus, longer pulse durations provide a more focused and controlled method for treating denser and coarser hair in individuals with darker skin.