Final answer:
Hair follicles are the subdermal system associated with the performance of facial treatments.
Step-by-step explanation:
The subdermal system associated with the performance of facial treatments is the hair follicles. Hair follicles are small sacs located in the dermis of the skin, and they play a role in the growth and maintenance of hair. In facial treatments, hair follicles may be targeted for hair removal or stimulation, depending on the desired outcome.
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