I was so surprised by the outdoor wedding photos that I'm looking into skincare products.

Yesterday, I attended a really close friend's outdoor wedding, which I hadn't seen in a long time. The weather was so nice, I was in a good mood and took a lot of pictures. However, when I got home and zoomed in on the photos under bright lights, I noticed dark spots around my cheekbones. I've been using the excuse of being busy to just apply sunscreen sparingly, and now I regret it. Disappointed that my reflection in the mirror doesn't look the same as before, I feel it's time to change my basic skincare routine, so I've started looking into skincare products to address my dark spots. Honestly, with so many products on the market, I'm having a hard time figuring out which ingredients to use. I've heard that products containing vitamins or niacinamide are good, but I'm worried they might irritate my sensitive skin. If you know of any gentle skincare products that have proven effective on dark spots, could you recommend them? I'm also curious about what other people's criteria for choosing skincare products are.