How do you clean porcelain dolls hair and clothes?

I am an novice collector of african american porcelain dolls most are period era dolls {circa: turn of the 19th century}; I enjoy them but they get dusty and their clothing and hair, how can I remove the dust without causing damage to the dolls and their clothing. In the coming months plan on purchasing a curio cabinet to store them properly in but for now and for the last yrs. they have been proudly displayed on my dresser, thank you for your help.....