Final answer:
Estheticians should use only alcohol-free cosmetic and aesthetic care products and avoid any that irritate the skin, such as harsh astringents or strong exfoliants. Lukewarm water is recommended for rinsing to protect skin's condition.
Step-by-step explanation:
Estheticians should use products designed for cosmetic and aesthetic care and must avoid products that could harm the skin. Specifically, they are advised to use only alcohol-free products and steer clear from items that might irritate the skin such as harsh astringents or strong exfoliants. When rinsing the skin, it is recommended to use lukewarm water, as extreme temperatures can also be harmful to the skin's condition.
In summary, skincare products used by estheticians have various ingredients that aim to protect and enhance the skin's appearance while maintaining good hygiene. These products are carefully selected to ensure they do not damage or cause discomfort to the skin they are applied to. It is important for an esthetician to be knowledgeable about the products they use and to seek those that provide a balance between efficacy and gentleness.