What determines how many passes of microdermabrasion can be done on a client?

The number of passes of microdermabrasion that can be performed on a client is primarily determined by the thickness of their skin. Microdermabrasion works by exfoliating the outer layer of skin, and thicker skin can generally withstand more passes without causing damage, irritation, or excessive redness. Conversely, clients with thinner or more sensitive skin require fewer passes to avoid adverse reactions.

While age of the client may influence skin thickness and characteristics, it is not a direct determining factor for the procedure. The type of skin treatment can also play a role in the overall skin condition, but it is less critical than assessing the skin's thickness itself. Experience of the practitioner is certainly relevant to performing the treatment effectively and safely; however, it is the physical properties of the client’s skin that dictate how many passes are appropriate for the treatment itself.