My skin has gotten dull due to the change of seasons, so I'm looking into Pico Toning.

Hi~ I'm a 29-year-old office worker, and I'm really worried because my skin seems to have gotten so dull lately with the change of seasons. After summer passed, my complexion became dull, and I even got blemishes here and there, so my makeup just doesn't look good. 😭 So, I've been looking into Pico Toning lately, and I'm really curious if it actually brightens the skin tone!! Can someone like me, whose skin darkens every time the seasons change, see results from Pico Toning?? Also, I'd like to ask how many sessions are usually needed to see visible results. ㅠㅠ It's hard to go to the clinic often while working, so I'm curious about the treatment time and recovery period! Would it be better to get it done before winter comes?? If anyone has been to a dermatologist, please leave a review. 🥺 I really want my skin tone to improve!!