Another and cheaper kind of silk stuff is called tartaryn.

Sunscreens protect you from UVA/UVB rays which can be emitted from many sources of light such as the sun, your tubelight and devices, Dr Khan said, adding that using sunscreen once a day is the bare minimum you can do for your skin.

have it on good authority that …

Ignat'ev refused to concede these points, but offered other concessions instead: Russia would not demand a consulate in Ch'i-ch'i-ha-erh or Chang-chia-k'ou (Kalgan); it would permit Chinese subjects to continue living along the Ussuri river as Chinese subjects; and it would limit to 200 the number of Russian traders in Peking.