Because it is not a protein product, the chance of allergic reaction is very small. Hyaluronic acid is metabolized and absorbed in the human body, so there is generally no long-term side effect, so don't worry.
At present, many medical plastic surgery institutions, or medical beauty salons, are injecting hyaluronic acid. Depending on where you want to do it, I can recommend a better local hospital for you. If you are not clear, you can click on my name and ask me.