Women who lived in the early 1800s must have known how to carefully wash and treat crinoline. Most women today would mistakenly wash the stiff fabric using the traditional water-and-soap method only to end up deforming its shape. You don’t want your perfectly formed crinoline to be flat and plain. But it’s the common result when you wash it with water. This fabric is stiff because of starch and washing the crinoline will also wash the starch away. You can make it stiff again by a method called starching. Here’s how to do that:
Starching the crinoline should be helpful on stiffening it again. But if this did not work, then try commercially made starch for hardening fabric. Better bring the crinoline to a professional if the commercial hardener is not effective. Sometimes, the damage can be irreparable. In that case, you can either live without a crinoline or buy a new one.