Tannverndarvörur

Tannverndarvörur, also known as sunscreen, are cosmetic products designed to protect the skin from ultraviolet (UV) radiation emitted by the sun. The primary active ingredients in sunscreens are chemical filters, such as avobenzone, oxybenzone, octisalate, and octocrylene, and mineral filters, like zinc oxide and titanium dioxide. These ingredients absorb or reflect UV radiation, preventing it from damaging the skin's DNA and reducing the risk of skin cancer and premature aging.

Sunscreens are typically categorized by their Sun Protection Factor (SPF), which indicates the product's ability to screen out UVB rays. A higher SPF number provides more protection, but no sunscreen can block all UV rays. It is essential to apply sunscreen generously and reapply every two hours or after swimming or sweating.

Sunscreens are available in various forms, including lotions, sprays, gels, and sticks, and can be tailored to different skin types, such as sensitive, oily, or dry skin. They are often combined with moisturizers, makeup, or insect repellents for added convenience.

Regular use of sunscreen is crucial for maintaining skin health, especially for individuals with fair skin, a history of sunburns, or a personal or family history of skin cancer. However, it is important to note that sunscreen should not be the sole method of sun protection; other measures such as wearing protective clothing, seeking shade, and avoiding peak sun hours should also be practiced.