FAQ About Sunscreen

Sunscreen protects the skin from the sun's harmful effects through a combination of physical and chemical processes. Different types of sunscreens achieve this protection in various ways:

• Absorption of UV Radiation: Chemical sunscreens contain organic compounds that absorb UV radiation. When applied to the skin, these compounds form a thin layer that absorbs UV rays and converts them into less harmful forms of energy, such as heat.
• Reflection of UV Radiation: Physical sunscreens, also known as mineral sunscreens, contain active ingredients like titanium dioxide or zinc oxide. These minerals sit on the skin's surface and create a physical barrier that reflects UV rays away from the skin.
• Scattering of UV Radiation: Physical sunscreens also scatter UV rays, preventing them from penetrating the skin deeply.
• Protection Against UVA and UVB Rays: Sunscreens labeled as "broad-spectrum" provide protection against both UVA and UVB rays. UVA rays penetrate deep into the skin and contribute to premature aging, while UVB rays primarily cause sunburn. Sunscreens prevent both types of rays from causing damage.
• Reducing Free Radical Formation: Exposure to UV radiation can lead to the formation of free radicals, which are highly reactive molecules that can damage skin cells and DNA. Some sunscreens contain antioxidants that neutralize free radicals, minimizing their harmful effects.
• Preventing Sunburn: Sunscreens with adequate sun protection factor (SPF) help prevent sunburn, which is a visible sign of skin damage caused by excessive UV exposure.
• Minimizing DNA Damage: Sunscreen reduces the risk of UV-induced DNA damage, which can lead to mutations and potentially contribute to skin cancer development.
• Protecting Against Photosensitivity: For individuals with photosensitivity conditions, sunscreens are essential in providing an extra layer of protection against adverse skin reactions triggered by sunlight exposure.