What are the effects of sclerotherapy?

Since I work standing up, I am very interested in varicose vein treatments.

Lately, my legs have been swelling more and it seems like my blood circulation isn't good, so I'm worried.

Recently, there has been a noticeable increase in symptoms of leg numbness.

Prevention is important, but since I have to stand continuously for work, that's not easy either.

I am curious about the effectiveness of sclerotherapy.