To prevent frown lines from appearing, wear sunglasses when you are out in the sun as this will help you avoid squinting.

When you are out in the sun, naked-eyed, you need to squint a lot in order to reduce the amount of light entering your eyes. This contributes to the formation of frown lines or wrinkles apart from causing headaches and other pains. Protect your eyes with good quality sunglasses when you go out in the sun. A darkened lens helps to absorb the bright light, while the UV filter protects your eyes from the dangerous UV rays.