Our One Way Mirror Spray contains Aluminum Powder, Acrylic Resin, UV Absorber. It can effectively clean the glass, form an invisible, durable protective layer on the glass surface, and better protect the privacy of individuals. Its use method is very simple: wipe the glass clean, dry, take an appropriate amount of this product evenly spray on the glass, wait 3-5 minutes to make it semi-dry, wipe the glass with a dry towel can be. Can improve privacy, achieve one-way visibility, let you occasionally see what is happening outside, while protecting others from prying eyes.