Will Vitamin C ampoules be effective for the skin?

Hello.

As I get older year by year, looking in the mirror isn't the same as it used to be, and it scares me...

Now that I’ve reached middle age, skin sagging seems to be getting noticeably worse. My cheeks, which used to be so firm, are now... so saggy... It really upsets me. I realized just how much my skin elasticity has dropped, and I felt that I shouldn't put off taking care of it any longer.

I’ve heard from some acquaintances that Vitamin C ampoules are good for anti-aging care. They say it contains antioxidants that brighten the complexion and help with collagen production, so I’ve been really interested lately. However, since my skin has become a bit sensitive as I get older, I’m actually a little worried that the vitamin ingredients might be irritating.

So, I'm wondering if there is a specific way to choose a Vitamin C ampoule suitable for middle-aged people like me who are concerned about skin elasticity? There are so many types on the market, so I'm curious about what the appropriate dosage is, whether it stings when applied, and the texture—whether it spreads naturally. I would also like to know if it is okay to apply these Vitamin C ampoules at any time, whether in the morning or at night.

As I get older, I find myself increasingly worried about skin elasticity and pores. If you have any products you've tried that worked well or any skincare tips, please share them with me. I believe we all share the same desire to age gracefully. I hope everyone maintains beautiful skin. ^^