dermal       
adjective uk/ˈdɜː.məl/ us/ˈdɝː.məl/
 皮肤的;真皮的;表皮的
for, in, or relating to the skin
  Dermal fillers are used to plump up wrinkles. 用皮下填充物使皮肤变得丰盈,减少皱纹。 
 The finger must still be cleansed with alcohol and allowed to dry before a dermal puncture is made. 手指仍须用酒精清洗,待干后再进行皮肤穿刺。 
 - More examples
 - These dermal papilla cells mature into hair follicles.
 - An over-the-counter product can't make a significant difference because it can't penetrate dermal layers.
 - Workers who come in dermal (skin) contact with hexane experience immediate irritation.