Sunscreen or sunblock? Which one is better? The truth is that they are equally effective, they are just made up of different ingredients. Sunblock contains titanium dioxide and zinc oxide, which create a reflective, mirror-like shield that helps to deflect the suns damaging rays from your skin. Sunscreen, on the other hand, contains PABA, benzophenones, cinnamates and walicylates, which work more like a sponge in that they soak up or absorb the sun’s harmful rays
It is important to use a sunscreen that blocks both UVA and UVB rays, but what is the difference between the two? UVA rays are always present, no matter the weather or season and were once thought of as less damaging. However, we now know that these rays are very powerful and are one of the main causes of premature aging, sun spots and leathery skin. UVA rays deeply penetrate the skin and can also penetrate clothing and glass.
UVB rays are not are strong as UVA rays as they don't penetrate into the deeper layers of our skin, but they are just as damaging.
There are days when i forget to slip, slop and also but i can't stress how important sunscreen application is! So just because the skin does not look red If we looked at sunburned skin under a strong microscope, you would see that the cells and blood vessels have been damaged.