Paper commonly used in photography

If you use a flashlight indoors and have a soft box, a rice dustpan (white foam board) is more durable than paper.

Soft and smooth paper (usually plastic and durable) used for solar lamps.

Butter paper is more durable than sulfuric acid paper. If it is used on a lamp, it will be baked very crisp, and it will break when you move it.

Of course, the butter paper and sulfuric acid paper located in the location can be mounted on cardboard for fear of wind (how good it is to use a reflector), and it is estimated that it will have no effect on the flash at the top of the machine.

I have never used sulfuric acid paper.