Final answer:
To prevent facial treatment products from getting into a client's hair, a hair cap, headband, or towel is used around the hairline. These items protect the hair during treatments. Hair care products like hair spray and shampoo are designed specifically for hair, serving both aesthetic and protective functions.
Step-by-step explanation:
During a facial treatment, to keep the product out of the client's hair, a professional might use a hair cap, headband, or towel wrapped around the hairline. These supplies are essential in ensuring that products such as creams, exfoliants, and masks used during facial treatments do not contact the hair, where they can be difficult to remove and may affect the hair's appearance or health.
Personal care products are formulated with various ingredients to protect the skin and promote hygiene, and similarly, products like hair spray and shampoo are designed for hair care. Hair sprays contain polymers to hold hair styles in place, while shampoos clean the hair and scalp, often followed by conditioners that moisturize and detangle.
The role of the hair on the human body goes beyond aesthetics; it helps in preventing heat loss from the head, provides a barrier against UV radiation, and protects against environmental irritants.