Roughly how durable (in years) is Entrada Rag? Do I HAVE to spray it? If I want to use it for making books - what about spraying in that case? What happens if I don't?

Thanks!

Minerva

spraying a print just increases the durability, as well as protection from UV light and small amounts of fingerprints. If you don't do it, your prints are ok, but the more they get handled the more you will see the small scratches and blemishes.