What technique is primarily used for cleaning facial brushes?

The technique primarily used for cleaning facial brushes is sanitizing. This is crucial because facial brushes come into direct contact with the skin, and proper sanitization ensures that harmful bacteria and viruses do not transfer from one client to another. Sanitizing involves using specific solutions or methods that effectively kill pathogens, thus maintaining hygiene standards and preventing skin infections or irritations that could arise from unclean equipment.

While rinsing can remove some residue and washing can help to clean brushes, these methods alone do not guarantee that all microorganisms are eliminated. Blotting is not a suitable method for cleaning brushes as it does not involve any proactive sanitation measures. Therefore, proper sanitization is essential in the esthetic practice to uphold health and safety protocols.