This will depend on the particular concern being treated, as well as the treatment area’s size and the severity of the concern.
Most patients will require a series of treatment sessions to achieve results and should understand that Q-Switch laser is generally not a standalone one-off treatment.
In some cases, this laser can achieve fast results. For spot-treating specific occurrences of hyperpigmentation such as sun spots, you may only require one or two rounds of Q-Switch laser for the targeted lesion to be broken down and eradicated.
However, for more involved and troublesome conditions such as melasma, post-inflammatory hyperpigmentation or freckling, usually a minimum of 3-5 sessions are recommended. Patience is key for gaining your desired results.