What could be the reason why the effects of Shrink aren't what they used to be?

In the past, I definitely felt my face tighten and gain elasticity after Shurink treatments, but lately, I am concerned because the effect seems less pronounced even with the same number of shots. Initially, I chose the treatment based solely on the number of sessions or shots, but over time, I have realized that personal factors such as skin condition, elasticity, and the thickness of the fat layer play a much larger role. I am very frustrated because I have been repeating treatments relying only on the numbers, and I am not seeing the lifting effects I expected.

In particular, the decrease in collagen and elasticity deep within the skin as we age is a natural change, but I think the problem was that I overlooked this and approached it in the same way as before. Ultimately, I believe what matters is not the number of shots, but customized treatments and care tailored to the skin condition. I think it is time to acknowledge that Shurink alone has its limitations and to consider lifestyle habits and other supplementary procedures as well.