Fig. 6

Improvement of dermal density. To check of dermal density, the ultrasonic test gel was treated to the test site and the probe of the DUB-Skin Scanner was perpendicular to the skin. Under the same conditions, the dermal density was measured by pressing all subjects at the same pressure on the 3-cm area of the left eye tail. The range of analysis was limited from below the epidermis to the upper part of the subcutaneous fat, and the intensity indicating the density of the dermis was measured at intervals of 2 weeks before and after use for up to 4 weeks. a Graph is inner skin density level and b image shows the density of dermis layer. The paired t test was conducted to determine statistical significance(*p < 0.05)