Please tell me some home care methods~

Last weekend, I went to a wedding of a college friend I haven't seen in a long time. I was surprised at how clear and clean the skin of one of my friends was. Lately, I've been working overtime a lot and have been constantly exposed to the air conditioning, so my skin has become incredibly dull. I looked so dull under the bathroom lights that I almost hated looking in the mirror. So, from now on, I'll be diligent. Home care I've decided to start. In fact, I used to just put on some skin lotion and go to bed, but now I think it's time to start taking care of my skin. Everyone should do it at home. Home care Do you have any special routines or products you recommend? I would really appreciate it if you could share even the smallest habits, including how to use mask packs or devices. Home care There's so much information out there, it's hard to know where to start. I'm curious to know how you all restore your skin's vitality.