I want to improve fine lines and facial hollowness due to loss of elasticity, but I have been hesitating for months to use skin boosters containing synthetic polymers because I was worried about the side effect of developing nodules that can be felt inside the skin. Then I heard about Celle Diem, which uses human dermal components, so there is less concern about immune rejection or a foreign body sensation. I like the fact that it absorbs into the body and naturally integrates like original skin tissue, but I am most curious about its safetyโwhether cases of foreign body nodules are truly rare. I am also really curious whether the swelling or redness after the injection is severe enough to interfere with my work life, and how many days it usually takes for the skin to stabilize.