Sunbathe Safely: Factors and Filters
Can I use leftover sunscreen from last year?
Cosmetic manufacturers are not required by law relating to cosmetics, to indicate the expiration date of a product if it has a shelf life in excess of 2.5 years.
Therefore, we need to evaluate in a very simple sunscreens those we left over the previous year, taking into account that, when in doubt, we must discard them and buy new ones.
- Your scent should be equal to the previous year, and should never smell.
- We must ensure that they have not been exposed to the sun, because the heat causes them to lose their protective properties. Should be left in a cool, shady place, it is best to leave them in the refrigerator when not in use.
What factors and what filter should I choose?
The SPF number quantifies the protective capacity of the same, because the greater it is, the more hours of protection can be granted. The factor we choose depends on skin type and duration of our exposure. Across the board, the factor 15 is fine for most people with normal skin, and there is big difference if you choose a higher factor.
Exceptions to this are children and adults who tend to suffer from eczema. Sometimes it is convenient to use a protective bar with a high factor in particularly exposed areas of the body, such as shoulders, lips, ears and back of the nose.