Whitening Injection Treatment: Is It Safe and Effective?

I’ve been hearing a lot about whitening injections recently, and I wanted to get a discussion going on whether they’re really worth it or not. For those of you who aren't familiar, whitening injections are typically used for skin lightening. They usually contain substances like glutathione, which is an antioxidant, and is said to help reduce melanin production in the skin, leading to a lighter complexion.
https://skinstudio.pk/skin-whitening-injection
Here’s what I’ve gathered so far:
How They Work: The injections generally involve injecting glutathione directly into the bloodstream. The idea is that it can reduce melanin production and make your skin appear lighter over time.

Results: Some users claim to see noticeable changes in their skin tone within a few weeks to a few months. Others say it doesn’t make a big difference for them.

Safety Concerns: There seems to be a lot of debate about how safe these treatments are. While glutathione is naturally present in the body, there are concerns about side effects, like liver damage or other complications when it’s used in high doses. It’s also important to note that these treatments aren’t approved everywhere, so regulation can vary.

My Questions for the Forum:
Has anyone here tried whitening injections? What was your experience?

Were there any noticeable side effects?

Do you think it’s a safe and effective option for skin lightening, or should people be cautious?

Are there any alternative treatments that you’ve found work better?

Looking forward to hearing your thoughts! I think it's important to gather more personal experiences before jumping into something like this.