Questions about skin pigmentation treatment

I'm worried because my skin pigmentation is getting worse due to acne scars and pigmentation.

Even if I try using whitening ampoules or creams at home, there is no significant change, and my skin tone looks dull overall.

I searched and found that laser treatment is effective for treating skin pigmentation.

I am curious about the procedure, duration, and recovery process.

I would also like to know to what extent skin pigmentation treatment and skin tone improvement are effective.

Is it possible to treat skin pigmentation even if the pigmentation is old?

Please also let me know if I need to make a reservation for the first consultation. 🙏🏻