I would like to ask about how to whiten my face.

Recently, my skin tone has become dull and blotchy overall, so I'd like to consult about how to whiten my complexion. My skin used to be relatively clear, but with accumulated UV exposure, fatigue, and stress, my complexion has darkened and I've started to see more blemishes. My confidence is low.

I've searched the internet and found various methods for whitening the face, including whitening creams, vitamin C ampoules, laser toning, and whitening injections. I'm curious to know which dermatologists recommend as the safest and most effective. I've also heard that different whitening methods are suitable for different skin types and conditions. My skin is combination and slightly hyperpigmented.

I'd also like to know about the recovery period, potential side effects, treatment intervals, and maintenance methods. I'd also like advice on lifestyle habits, UV protection, and dietary habits to help maintain the whitening effects.