In relation to facial machines, what does "entrainment" mean?

Entrainment refers to the process that enhances the absorption of products into the skin by using specific methods or techniques associated with facial machines. In this context, deep product absorption is achieved through various technologies, such as ultrasound or iontophoresis, which facilitate the movement of active ingredients deeper into the skin layers. This allows for better efficacy of the skincare products being used, maximizing their benefits and improving overall skin health.

The other concepts, such as skin exfoliation, steam application, and cold therapy, focus on different aspects of facial treatments. While important for various skin care goals, they do not relate specifically to the concept of entrainment.