Sunscreen can make eyes water if the product migrates into the eyes, often because of sweating or touching the face. Some sunscreen formulations contain chemicals that can be irritating to the eyes, leading to tearing. If one is prone to this, using a water-resistant, sweat-proof sunscreen and being cautious during application can help. For those particularly sensitive, it might be worth exploring sunscreens made for sensitive skin or children, as they tend to be gentler. If watering persists or is accompanied by pain or vision changes, it's essential to see an eye doctor to ensure there's no underlying eye emergency.