Final answer:
A facial steamer is a skincare device that emits soothing heat to soften the skin and improve product penetration, through a process called vasodilation which increases blood flow and heat radiation from the skin.
Step-by-step explanation:
The skincare equipment that provides soothing heat and helps to soften the skin to allow for better penetration of products is commonly known as a facial steamer. When used, the warmth from the steamer causes blood vessels in the skin to dilate, which is a process known as vasodilation. This increase in blood flow brings more blood from the warm body core to the surface of the skin, enabling heat radiation. The increase in skin temperature and subsequent softening of the skin can help in reducing microbial load through improved efficacy of scrubbing and mild chemicals as well as enhance the absorption of skin treatments and moisturizers, which can contain water acting both as a hydration agent and a vector for other product ingredients.