I have an inquiry about toning lasers.

I am considering a toning laser treatment to improve melasma and blemishes, so I am inquiring about a consultation.
I am concerned about my uneven skin tone because I usually have light pigmentation and blemishes on both cheeks and around the cheekbones.
Although it is covered to some extent with makeup, my bare face looks dull, so I am looking for ways to improve it.
I am wondering if toning laser treatment is suitable for my skin condition.
In particular, I would like to know how many treatment sessions are typically required to expect noticeable improvement, and whether this varies depending on individual skin conditions.
I would also like to consult on whether the effect is limited with just one treatment, or if I need to receive multiple sessions consistently.
I am curious to know how long the effects of the laser treatment last, and whether additional care or re-treatment is necessary to extend the duration.
I am also curious about how the treatment interval is usually set and whether there is a possibility of skin irritation or side effects.