How long does the density last?

I became interested in Dencerty while comparing various procedures, but since it is my first time receiving it, I am asking this question because I am curious about how long the effects last.

I am curious about how long the effects of Dencerty usually last after a single treatment. I would also like to know if the duration of the changes felt immediately after the procedure differs from the duration of the improved elasticity that appears over time.

I am also curious if the duration of the effects varies significantly depending on individual skin condition, age, and the degree of sagging. I would like to know if the effects tend to fade quickly in cases of severely reduced skin elasticity, or if they last relatively longer in cases of good skin condition.

I am also wondering if I should get a re-treatment immediately if the effects gradually diminish, or if it is better to manage it consistently at regular intervals.