I want my skin tone to brighten. Please recommend some effective products.

I wish my skin tone were just a little brighter than it is now, even without makeup.

My skin is on the sensitive side, so I tend not to wear much makeup.

Even when I did wear makeup, I used to just apply sunscreen and a thin layer of BB cream, but these days I only apply tone-up sunscreen.

When I'm not wearing makeup, my skin has a yellowish tone, so it looks dull.

The children take after their dad and have fair skin, so when we stand next to each other and look in the mirror, I can really see the difference.

I have been consistently applying Physiogel Vitamin C ampoules for two months now, but I don't think I've seen any noticeable effects yet.

How long should I apply the cosmetics to see results from them alone?

I'm currently only using Vitamin C ampoules, but I keep getting interested in whitening creams as well.

Please recommend any products you have tried that you found effective.