What is the effect of lower ultrasound frequency on penetration?

The effect of lower ultrasound frequency on penetration can be understood through the principles of ultrasound wave propagation. Lower frequencies have longer wavelengths, which allows them to penetrate deeper into tissues compared to higher frequencies. This increased penetration occurs because higher frequency sounds, with their shorter wavelengths, tend to scatter more and are absorbed more rapidly by the tissues.

In the context of ultrasound use in facial treatments or medical therapies, a lower frequency means that the waves can travel further into the body before being absorbed. This characteristic is particularly useful when aiming to target deeper tissues without excessive absorption at the surface.

Higher frequencies, while producing a greater resolution and being more efficient for superficial treatments, do not penetrate as deeply. Therefore, the understanding that lower ultrasound frequency increases penetration is based on the inherent physical properties of sound waves and tissue interaction.