Critical Medicine and Treatment

Posts Tagged ‘Sunbathe Safely’

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. Read the rest of this entry »

How waterproof or water resistant sunscreen?

If you want to swim to cool off and at the same time be protected against injuries that can cause the sun on the skin, make sure that the sunscreen is waterproof or water resistant (waterproof). A waterproof  sunscreen stand 80 minutes of immersion baths or 4 20 minutes without disappearing. If the sunscreen is waterproof, can swim 40 minutes or 2 baths 20 minutes without being removed. However, this only applies if air-dry (no towel) and the amount recommended by the manufacturer. It is recommended an additional layer provided prior to each time we go to take a bath, as a measure to ensure optimal sun protection. Read the rest of this entry »

Sunscreen creams on the market that work in different ways to protect against the sun thanks to the presence of chemical filters and / or physical.

The chemical sunscreen

These are substances that penetrate the skin after absorbing sunlight, thus preventing active in the deeper layers and cause injury. Some chemical filters only provide protection against UVB rays (ultraviolet-B), while others protect against UVB and UVA.

The physical filter

On the other hand, place a thin membrane like a mirror at the top of the skin and reflect sunlight. Physical filters are usually light colored, for example, white zinc oxide. Protect against both UVA rays, and UVB. Read the rest of this entry »

The sun and its effects on the skin

People with fair skin and light hair have a sensitive skin type and a high risk of sunburn, given the lack of skin pigmentation. In them, the occasional sunburn (skin crab) increase the risk of skin cancer. People whose skin is white must be more careful than people with dark skin.

The Australians had a public health campaign very simple and very successfully, which emphasized the need to include specific preventive measures such as use of sunscreen, shirt and hat for sun safety.

We all love the sun, but the reaction to the rays varies from one individual to another. The number of cases of skin cancer has doubled in the last 20 years, which is probably due to increasing hole the ozone layer, among other possible factors. So we must be careful when sunbathing. Read the rest of this entry »