Which of the following benefits is associated with the use of an ultrasonic facial machine?

The use of an ultrasonic facial machine is particularly known for enhancing product absorption into the skin. The ultrasonic waves generate micro-massages that increase the permeability of the skin's outer layer, facilitating the penetration of serums and other skincare products into the deeper layers of the skin. This process not only boosts the effectiveness of the products being applied but also helps in delivering active ingredients more efficiently, making treatments more effective.

Other benefits associated with ultrasonic machines may include stimulating circulation and lymphatic drainage, but the primary and most recognized benefit remains the enhancement of product absorption. This makes ultrasonic technology especially valuable in skincare treatments where the efficacy of topically applied products can significantly influence the outcome of the treatment.