Is it possible to develop an allergy after a skin booster treatment?

Lately, my skin texture isn't great, and I think my oil-moisture balance is messed up.

The pores are prominent, and the skin has lost its vitality.

So, I'm really tempted by skin boosters these days, like Rejuran or Juvelook.

You know how they inject things like collagen, salmon DNA, and hyaluronic acid into the skin?

Is it possible to have an allergic reaction in that case?

I saw in the reviews that it happens quite often.

I don't usually have allergic reactions, but I'm worried I might develop one after the procedure.

I am also wondering if allergy testing or similar procedures are available during the consultation process.