My skin condition today - my tone is dull ㅠㅠ

Even though I apply Vitamin C serum in the evening these days, I feel like my skin tone has become dull.

It's not even full-blown summer yet... *sob*

I should look into some whitening methods before summer comes.

As expected, there is no end to skincare...

Now that the unevenness has improved, I'm worried about my skin tone again... hahaha