Is there a whitening routine that I can stick to this winter?

I just had dinner and was peeling a tangerine when I looked in the mirror. Maybe it's because of the heater, but my pores look so dilated. My complexion looks much duller than last year... I'm writing this because I'm curious about everyone's whitening routines ahead of the end of the year. Maybe it's because my skin is so dry, but my usual tone-up products are all over the place, and my previously hidden blemishes are even more prominent. I've been trying to implement a whitening routine at home, but my skin is so sensitive that even the slightest hint of vitamin supplements can cause it to flare up. Is there a whitening routine that's less irritating but still deeply brightens my skin? If you know of any products or routines that provide both hydration and a brightening effect, please let me know. It's past 8 p.m., and the air is so dry that my face is starting to feel tight, and I'm getting impatient. If you happen to know of any effective whitening routines that only you know of, please share them.