The use of a sleeping cap, nightcap, or sleep bonnet goes back to the 14th century and likely even earlier. They were originally worn by men and women to protect against cold nighttime temperatures. Men may have also worn them to cover their bald heads in the name of dignity.
Why did ladies wear bonnets?
The idea was that women would cover their heads with caps out of female modesty, again, in European society, based upon the historical teaching of the Christian Bible. In addition, women in wedlock would wear caps and bonnets during the day, to further demonstrate their submission to their husband.
What do satin caps do?
Sleeping with a satin cap means no more split ends. It protects your hair from the dryness caused by friction between your hair and moisture-absorbing materials such as cotton. This also helps to greatly reduce breakage, tangles and thinning.
