PSI Barbering Practice Exam 2026 – All-in-One Resource to Master Your Certification!

Iontophoresis is a technique that uses a small electric current to introduce ionic substances into the deeper layers of the skin. This process facilitates the penetration of products, such as serums or other therapeutic compounds, allowing for enhanced efficacy.

Disincrustation is a preparatory step often performed before extractions to soften sebum and debris in the pores, enabling easier removal. The use of iontophoresis in this context helps to deliver ionized products into the skin, making it an essential component of the disincrustation process.

In contrast, exfoliation focuses on removing dead skin cells from the surface without the use of electrical currents. Hydration involves applying moisture to the skin, typically through topical products rather than using iontophoresis. Extraction pertains to the physical removal of blockages from pores, which does not utilize the iontophoresis method. Therefore, among the provided choices, disincrustation is the correct answer as it specifically involves the use of iontophoresis to introduce products into the skin for enhanced cleansing and preparation.