After undergoing medical aesthetic treatments such as photorejuvenation, laser therapy, mesotherapy, microneedling, or chemical peels, the skin enters a special "window period" — during which its barrier function is temporarily weakened, accompanied by a series of fragile conditions such as dryness, redness, burning, and tightness.

Postoperative care in cosmetic procedures is a crucial factor in determining the final outcome. However, issues such as damage to the skin barrier, inflammatory reactions, and dryness with flaking after the procedure often cause anxiety for patients.