Subject + 戴上 + Object
戴上 (dàishàng) means "to put on" an accessory, hat, glasses, or similar item. The directional complement 上 (shàng) indicates the completion of placing the item onto the body. It is specifically used for items worn on the head, face, hands, or around the neck — not for clothing in general.
出门前别忘了戴上口罩。
Chūmén qián bié wàng le dài shàng kǒuzhào.
Don't forget to put on your mask before going out.
天气太冷了,快把手套戴上。
Tiānqì tài lěng le, kuài bǎ shǒutào dài shàng.
The weather is too cold, hurry and put on your gloves.
她戴上了新买的太阳镜,看起来很酷。
Tā dài shàng le xīn mǎi de tàiyángjìng, kàn qǐlái hěn kù.
She put on her newly bought sunglasses and looked very cool.