What is SPF?
You hear and see everywhere that you should use an SPF every day, but what exactly is SPF?
What does SPF mean
SPF stands for Sun Protection Factor. In other words, how well protected it against UV radiation. This can be done by reflecting or absorbing the radiation. That SPF factor only stands for protection against UV B radiation. UV B radiation causes you to burn and your skin to turn red. Most sunscreens also protect against UVA rays, but not all. Uv A radiation penetrates deeper into your skin and is partly responsible for skin aging and skin cancer.
There are two different types of filters that can protect you against UV radiation: mineral and chemical.
This filter reflects the UV rays and puts a layer over your skin. This protects immediately after application. It is suitable for all skin types, including those with sensitive skin. Sunscreen creams with these types of filters are often visible on the skin and can turn white. Finally, they can be easily removed with water and are therefore usually not waterproof.
These filters absorb the UV rays and penetrate your skin. One drawback is that they only protect 15 to 30 minutes after application. They are suitable for all skin types, sometimes they can irritate very sensitive skin. Furthermore, products with these filters are often waterproof and sweat proof, so very suitable for your workout outside! In addition, they often do not shine and are transparent, so they do not cause a white haze.
Which filter should I choose
Both types of sunscreens offer good protection. So it depends on what you think is important. In any case, remember to keep on lubricating regularly!
Look here for Do's and Don'ts from SPF.