sólarvörn

Sólvörn, often translated as sunscreen or sunblock, is a product designed to protect the skin from the harmful effects of ultraviolet (UV) radiation from the sun. UV radiation consists of two main types that reach the Earth's surface: UVA and UVB. UVA rays penetrate deeper into the skin and contribute to premature aging, while UVB rays are primarily responsible for sunburn. Prolonged exposure to both can increase the risk of skin cancer.

Sólvörn works by either absorbing or reflecting UV radiation. There are two main categories of ingredients: chemical filters that absorb UV rays and convert them into heat, and physical blockers, such as zinc oxide and titanium dioxide, that sit on the skin's surface and physically block or scatter UV rays.

The effectiveness of sólarvörn is measured by its Sun Protection Factor (SPF). SPF indicates how well a sunscreen protects against UVB radiation. A higher SPF number means greater protection. It is recommended to use sólarvörn with an SPF of 30 or higher, and one that offers broad-spectrum protection, meaning it protects against both UVA and UVB rays.

Proper application is crucial for sólarvörn to be effective. It should be applied generously to all exposed skin at least 15-20 minutes before sun exposure. Reapplication is necessary, especially after swimming, sweating, or towel-drying, typically every two hours. While sólarvörn is an important tool for sun protection, it is not a substitute for other sun safety measures such as seeking shade and wearing protective clothing.