No sunscreen can completely prevent skin darkening, also known as tanning. Sunscreens work by absorbing or reflecting ultraviolet (UV) radiation from the sun, which is the primary cause of tanning. However, they cannot entirely block all UV rays.
While sunscreen cannot prevent tanning altogether, it significantly reduces the amount of UV exposure and helps minimize the intensity and duration of tanning.
Here are some key points to remember:
- Sunscreens with a higher SPF (Sun Protection Factor) offer greater protection against UV rays.
- Broad-spectrum sunscreens protect against both UVA and UVB rays, which are responsible for tanning and sunburn, respectively.
- Applying sunscreen generously and reapplying it every two hours, especially after swimming or sweating, is crucial for optimal protection.
It's important to note that other factors, such as genetics and skin type, also play a role in determining how easily someone tans.
