What dual actions define the blend method of permanent hair removal?

The blend method of permanent hair removal is characterized by the combination of short wave and direct current. This technique utilizes both modalities to provide an effective approach for hair follicle destruction.

In this method, short wave radio frequency energy is used to generate heat in the hair follicle, which helps in damaging the follicle to inhibit future hair growth. Meanwhile, direct current is applied concurrently, which works synergistically with the heat to enhance the effectiveness of the treatment. This dual action not only improves the overall efficiency of the procedure but also can reduce the time required for hair removal compared to using either method alone.

The other options do not represent the blend method accurately. The blend method specifically combines short wave and direct current, making it a unique approach within the hair removal techniques available. This combination is distinct to the blend method, distinguishing it from other methods such as laser or pulsed light treatments, which operate on different principles and mechanisms.