I have a question about the salmon-based ingredient 'Rejuran'.

I have a question about 'Rejuran,' a salmon-based product said to strengthen the skin barrier.

I am looking into 'Rejuran Healer' in detail because I heard that it is very effective for strengthening the skin barrier and regenerating skin with salmon ingredients.

I’ve heard that ingredients extracted from salmon are similar to those in the human body, so they have fewer side effects and fundamentally restore damaged internal skin structures. By what principle does this salmon ingredient strengthen the skin barrier and balance oil and moisture once it enters the skin?

Also, while Rejuran is excellent for skin regeneration, I am hesitant to get the courage to proceed because there are many reviews stating that the procedure is very painful. I am also wondering if there is a specific method to receive the treatment with reduced pain. Please explain the characteristics, effects, and pain level of Rejuran!