Understanding the importance of shielding ourselves from harmful ultraviolet (UV) radiation is vital throughout the year, especially during the summer months. While sunscreen has long been the go-to method for blocking UV rays, sun-protective clothing is becoming increasingly popular. However, do these garments truly deliver on their promises? How long can they provide protection? Are they capable of replacing sunscreen altogether? Let’s shed some light on these inquiries and explore the best options available.
Types of Ultraviolet Radiation (UVR)
Ultraviolet radiation, also known as UVR, can be categorized into three types depending on their wavelengths. Although the Earth receives a significant amount of UVA and some UVB rays, UVC rays are completely absorbed by the ozone layer. It is important to note that overexposure to UVB radiation can lead to premature skin aging, skin cancer, and eye damage, which may eventually result in blindness.
Understanding UPF: Ultraviolet Protection Factor
When it comes to sun protection, Ultraviolet Protection Factor (UPF) plays a significant role in the effectiveness of sun-protective clothing. The UPF rating of a fabric indicates the amount of UVA and UVB radiation it allows to reach the skin. For example, a fabric with a UPF rating of 50 will allow only two percent of the rays to penetrate, blocking an impressive 98 percent of UVA and UVB rays.
It is important to note that UPF is different from the familiar Sun Protection Factor (SPF) found in sunscreens. SPF measures the effectiveness of sunscreen in protecting against UVB rays and is based on the amount of time it takes for UVB-exposed skin to sunburn. For instance, a sunscreen with an SPF 20 will protect the skin twenty times longer than if no sunscreen were used.