Our Reflective One-Way Mirror Spray contains aluminum powder, acrylic resin, and UV absorbers. It effectively cleans glass, forming an invisible, long-lasting protective layer on the glass surface to better protect personal privacy. Its usage is simple: clean the glass thoroughly, let it dry, spray an appropriate amount evenly on the glass, wait 3-5 minutes for it to semi-dry, then wipe clean with a dry towel. It can improve privacy by enabling one-way visibility, allowing you to occasionally see what's happening outside while preventing others from peeping