名詞 facial:

1. cranial nerve that supplies facial muscles
   同義詞：facial nerve, nervus facialis, seventh cranial nerve
2. care for the face that usually involves cleansing and massage and the application of cosmetic creams

形容詞 facial:

1. of or concerning the face
2. of or pertaining to the outside surface of an object

1. The cream dissolves facial hair.
   這種化妝品能清除臉上的汗毛。
2. She is having a facial massage.
   她正做臉部按摩。
3. She wiped off the sweat from her face with a piece of facial tissue.
   她用一張面巾紙擦掉臉上的汗水。
4. I've made an appointment for a facial next week.
   我已經預約了下周去美容。

fa.cial

adj.（形容詞）
Of or concerning the face:
臉的：臉的或有關臉的：
例句：
facial cosmetics; facial hair.
臉部的化妝；臉毛

n.（名詞）
A treatment for the face, usually consisting of a massage and the application of cosmetic creams.
美容：面部治療，常有按摩和使用化妝用品

【引伸】
fa.cially
adv.（副詞）