Yes, window tint can be applied outside on the exterior of windows. This type of tint is known as exterior window film and is typically thicker and more durable than interior tint. It can be applied directly to the glass and can provide a range of benefits such as uv protection, privacy, and energy savings. Exterior window tint can also help to reduce glare and heat gain on the interior side of the windows, making it a great option for homes and buildings in sunny climates. Exterior film typically comes with 5-7 years of warranty.