Our reflective one-way mirror spray contains aluminium powder, acrylic resin and ultraviolet absorber. It can effectively clean glass and form an invisible, long-lasting protective layer on the glass surface, better protecting personal privacy. Its usage method is very simple: Clean the glass thoroughly and let it dry. Take an appropriate amount of this product and spray it evenly on the glass. Wait for 3 to 5 minutes until it is half dry, then wipe the glass clean with a dry towel. It can improve privacy, achieve one-way visibility, allowing you to occasionally see what's happening outside while preventing others from prying.