"Prevent Peering Eyes: This one-way mirror film protects privacy during the day: the side with more intense light will produce a mirror effect. The other side, it will be transparent, that allows you to see outside without to be seen Protects from Heat: Its reflective power (reduce the heat of windows). This one way mirror can anti 99% of UV and cut 85% of heat. It protects the skin against damage caused by UV rays Penetrates Daylight: Small loss of brightness but clearly noticeable temperature difference and prevents prying eyes from outside Easy to Apply: This one-way film is not sticky after spraying with clean water and easier to install than adhesive film. After the water is dry, the viscosity is restored and is stronger than glueless films Different Effect Between Day and Night: When indoor light is stronger than outdoor light at night, people outside can see people inside. Don't forget to draw the curtain at night Mirror Film for One Way Window - Its classic silver mirror look will change your home and office windows and provide you with enough privacy and protection."