Sun products are mostly used during the summer. However, we tend to be confused about the SPF intensity. But worry not, we are here to educate you.
What is an SPF?
The Sun Protector Factor, simply referred to as SPF, is an index which assesses the degree of protection against UVB as a priority, but also against UVA accelerators of skin ageing. There are 4 levels of SPF:
- Low, in the range 6-10.
- Medium, in the range 15-25.
- High, in the range 30-50.
- Very high, over 50.
The difference between SPF 15, 30 and 50
The main difference is the degree of UVB blocking, usually expressed as a percentage. An SPF 15 blocks around 92% UV, an SPF 30 blocks 95% and finally, SPF 50 blocks 98% UV.
It is important to know that no cream in the world can block 100% UV. So whatever SPF you choose, you will need to apply it on a regular basis, especially on the most sensitive parts of your body. For example, you can put it on every hour, taking care to avoid the 11am-3pm time slot, because this is a period during which the sun’s rays are particularly aggressive on the skin.
Finally and contrary to what most people believe, you can totally tan using an SPF 50 cream.