名詞 conditioner:

1. exercise that conditions the body
2. a trainer of athletes
3. a substance used in washing (clothing or hair) to make things softer

1. Hair's natural shine is supplied by its own conditioner, sebum, an oil composed of waxes and fats and also containing a natural antiseptic that helps fight infection. Too much sebum results in greasy hair and conversely, too little sebum makes dry hair.
   頭發(fā)的自然光澤來自它自身的護(hù)發(fā)素：油脂，它含有蠟和脂肪，還含有抗感染的自然抗菌劑。油脂含量過多會(huì)導(dǎo)致油性發(fā)質(zhì)，相反，油脂含量過少則會(huì)導(dǎo)致干性發(fā)質(zhì)。
2. Only the whir of the air conditioner broke the silence in the office.
   打破辦公室內(nèi)寂靜的，只有空氣調(diào)節(jié)機(jī)呼呼的轉(zhuǎn)動(dòng)聲。
3. Lipstick and hair conditioner are cosmetics.
   口紅和護(hù)發(fā)素都是化妝品。
4. This new style of air conditioner is noiseless.
   這種新型空調(diào)沒有噪音。

con.di.tion.er

n.（名詞）
One that conditions, especially an additive or application that improves the quality or usability of a substance:
調(diào)節(jié)物，尤指能改進(jìn)物質(zhì)的性質(zhì)或使用性的添加劑或裝置：
例句：
a soil conditioner; a hair conditioner.
土壤團(tuán)粒結(jié)構(gòu)促進(jìn)劑，吹風(fēng)機(jī)