What type of technique is used as a delivery system in esthetics?

The technique identified as a delivery system in esthetics is the chemical technique. This method involves the use of various chemicals to facilitate the absorption of active ingredients into the skin, enhance their efficacy, and achieve desired results. Chemical techniques are foundational in esthetic treatments, such as chemical peels, where specific acids are applied to exfoliate the skin, improving texture and appearance.

By utilizing chemical agents, estheticians can target specific skin concerns like hyperpigmentation, acne, and signs of aging. This approach allows for controlled modification of skin properties and promotes cellular turnover, leading to healthier skin. On the other hand, mechanical, thermal, and electrical techniques serve different purposes in esthetics, such as exfoliation, heat application for increased circulation, or therapeutic electrical stimulation, but they do not primarily function as a delivery system in the same way that chemical techniques do.