I'm curious about honest cosmetic reviews for that vitamin ampoule that claims to get rid of freckles and blemishes lol

I couldn't sleep late at night, so I was lurking on the general discussion board when a question popped up, so I decided to leave a post. Lately, every time I look in the mirror, I notice faint pigmentation around my cheekbones—I can't tell if it's a freckle or a blemish—and it's really bothering me. ㅠㅠ In the past, I used to get compliments on my clear skin even when I just applied sunscreen haphazardly, but it seems time really does wait for no one. So, I'm thinking of getting a pure Vitamin C ampoule that's supposed to be good for whitening. Has anyone used it before? Could you please share some vivid cosmetic reviews? I heard that high-concentration vitamin products can sting and feel hot when you first apply them, so being a bit of a scaredy-cat, I haven't been able to click the purchase button yet. Haha. I really, really need real cosmetic reviews like how much irritation you experienced when you actually used it, or if it really brightened your complexion. ㅠㅠ

Honestly, when I search online, everyone just praises the product because they received it as a sponsorship, so it's hard to trust them 100%. I feel that cosmetic reviews left by our Maypure members after using the product for over a month with their own money are the most trustworthy, so I'm posting this question. I'd love to know if it's better to start with a low concentration of around 10%, and if you experienced any side effects. If you could share your candid reviews, it would be a huge help in deciding whether to open my wallet. Please, everyone, answer my questions!