What is the term for the practice of using sharp tools to remove dead skin?

The term for the practice of using sharp tools to remove dead skin is exfoliation. This process typically involves the use of instruments like scalpels or specialized blades to carefully slough off the outer layer of dead skin cells. Exfoliation helps to promote skin renewal, improve texture, and allow for better product absorption.

Hydration refers to the process of adding moisture to the skin, which is crucial for maintaining its health and appearance, but it does not involve the removal of dead skin. Infusion relates to delivering active ingredients into the skin, often through techniques designed to enhance penetration, but it also does not involve removing dead skin. Acidification involves the application of acidic substances to chemically exfoliate the skin or alter its pH, but it does not specifically denote the use of sharp tools.

Thus, exfoliation is distinctly defined by the method of using sharp instruments to effectively manage and improve the skin's surface by eliminating the buildup of dead cells. This clarity helps in understanding the purpose and technique behind this important skin care practice.