Men's Cashmere Sweaters | Cashmere Clothing

The sweater I bought is just a little too short.. Is there a way to fix that? I know that if you soak a sweater and put hair conditioner on it and pull it, it’ll stretch the fibers out, would that work with cashmere? Thanks if anyone can help!

I have heard that fibers like cashmere or angora can be rinsed with a hair conditioner because they are hair themselves. Has anyone ever done this?