Does Vitamin C Work Differently on Dark Spots?

I’ve been exploring how vitamin C serums perform on my combination skin, particularly concerning dark spots. It seems like the areas with hyperpigmentation oxidize faster than the surrounding skin. Has anyone else noticed this phenomenon? I’m starting to wonder if the serum is less effective on those darker patches.

I’ve been trying out a few travel-sized vitamin C products to find one that suits my routine without taking up too much room. While I appreciate the brightening benefits of vitamin C, I can’t shake the feeling that my darker spots might be responding differently. I’d love to hear if you’ve experienced something similar or if you have any tips for keeping vitamin C stable while traveling.

Do you think the formulation affects how vitamin C interacts with different skin tones or pigmentation? What are your favorite brands for vitamin C, especially for tackling stubborn dark spots? I’m eager to hear your experiences!