I am looking into collagen booster treatments because I am concerned about fine lines and skin elasticity. How effective are they?

As I entered my 30s, I became increasingly concerned about noticeable fine lines around my eyes and mouth, and my skin's lack of elasticity. Feeling that home care alone has reached its limits, I started looking into dermatological procedures. I became interested after hearing that collagen booster treatments, which replenish elasticity from deep within, are currently the trend. With many reviews stating that it naturally adds volume and smooths the skin texture, I am seriously considering getting a collagen booster treatment. However, I am very sensitive to pain, so I am wondering if the pain will be tolerable if anesthetic cream is applied. I would also like to know how many sessions are typically required to see noticeable improvements in elasticity, as well as the recommended interval between treatments. I plan to visit a clinic soon for a consultation regarding the collagen booster, so I would appreciate a detailed response.