relaxer
noun uk/rɪˈlæk.sər/ /rɪˈlæk.sɚ/
[ C ] mainly US (also relaxant)使人放松的事物
something that helps you relax
It was a relaxer for him, like doodling. 这对他来说是一种放松，就像乱涂乱画一样。
[ C or U ] mainly US (also relaxant)使肌肉放松的物质，松弛剂
a drug or other substance that makes muscles less tight
Temazepam is a drug used as a muscle relaxer or sleeping aid. 替马西泮是一种肌肉松弛药，也可用于助眠。
Relaxers should be used first, as the narcotics should be used when other things don't give enough relief. 首先应使用松弛剂，在其他药物不能缓解痛苦时才使用麻醉剂。
[ C or U ] (also relaxant)（拉直头发时使用的）松弛剂，软化剂
a chemical used for straightening curly hair
She packed what she deemed were essentials: cocoa butter, hair relaxer and body spray. 她认为是必需品的东西都带上了：可可脂、头发软化剂和香体喷雾。
Even if you don't want to spend megabucks on relaxers, book a consultation at your salon so you can learn the right way to do it yourself. 即使你不想在头发软化剂上大把花钱，也可以在美发厅约一个咨询服务，这样就可以学会自己做的正确方法。