Do you have any products with whitening effects or ways to brighten up your complexion?

hello~

I'm quite worried because my complexion tends to be a bit dull and dark. I'm writing this post to ask about products with whitening effects or ways to brighten up my skin!

I've been really stressed lately because my skin looks so dull. I think it's because I've been exposed to too much sunlight, but I've developed melasma and a lot of blemishes. Since makeup doesn't cover them well, my confidence has dropped... I feel like I can't go on like this, so I'm looking for whitening care methods and products. If you have any recommendations for effective products or skincare routines, please let me know!

Would it be better to use the whitening line?

To check if a whitening line is effective, how many months would I need to use products from a single company with a whitening line to feel the effects?