BickmoreNone Kahl Hat Stiffener Black One Size

Q: Will this stiffener go soft in rain or wet weather?

It is a starch based product, so it will eventually get soft. When that happens I re-apply, then set the hat in a 350 degree oven for 90 seconds. Nice and stiff after that!

Q: Concensus on how necessary this is, "If you do not steam this product ... Steaming is a priority."?

Steaming gives best results but most at home users do not, and they have good results as well. The steam pulls the product into the felt deeper

Q: Will this work on the brim of a baseball cap? I I want it curled more, but the material is so thick. Thanks

I use a heat gun to get the curve I like on ball caps. Be careful not to scorch material. Its best to have it setup in a frame of wood with the arch you like then apply heat in all areas of the bill and let it cool and do it again. The second time I usually wet it to make sure it stays. Most hats have plastic in there. So quick cool with water works well on second time.