Spray as much as needed. You cant OD on silver, and its not bad for your skin UNLESS you are allergic to silver
I am experimenting right now on acne. I have been getting Acne on my back and chest lately, dont know if from stress or what.....Thi morning I had a rather large painful one, I sprayed silver on every 1/2 hour and let it dry. Its almost gone and the pain is almost non existant..........