Sunscreen - know your facts
Do you know your facts about sunscreen? Which to buy? SPF/UVA protection, how often to apply?
Sunscreen, the facts we should all know:
The active ingredients in sunscreens (called UV filters) are classified as either organic or inorganic.
Organic chemicals work by absorbing UV radiation, whereas inorganic chemicals both absorb and scatter the incident UV radiation. Many modern sunscreens contain a mixture of both organic and inorganic UV filters to provide broad spectrum protection against both UVA and UVB radiation.
The Sun Protection Factor (SPF) is a system used globally to determine how much protection a sunscreen gives when applied to the skin at a thickness of 2mg/cm2. The test measures how much protection against UV radiation the sunscreen provides, e.g. a product providing SPF30 will result in a skin exposure of just one-thirtieth that received by unprotected skin for the same time in the sun.
Sunscreens, in order to be protective, have to be applied liberally to be effective. This includes using it to all
exposed areas and regularly reapplying sunscreen every 2 hours and immediately after swimming/towelling.
TOP TIPS FOR BUYING AND APPLYING SUNSCREEN
Firstly be aware that no sunscreen provides complete protection, so never rely on sunscreen alone to protect your skin - for best protection you should practice the 5 S's of Sun safety - see following blog
Choose a sunscreen with a Sun Protection Factor (SPF) 30 or above, preferably water resisitant
Make sure it's broad spectrum and carries a UVA symbol - if it has a star rating, use a minimum 4 star rating
Be aware that the price of sunscreen does not always match the quality
Store in an accessible, cool place and remember to check the expiry date
Try a toddler sunscreen if you have sensitive skin
Apply 20 minutes before you go outside and preferably once again when outdoors
Apply a generous amount of sunscreen, ideally, the average sized adult should apply at least a teaspoon of suncream to each arm, leg, front of body and back and at least 1/2 teaspoon to face, including, neck, and ears. That is 35ml of sunscreen for one application. If you find this quantity too much, then one trick is to apply a 2nd coat in the sun. Think of it as painting a textured wall - 2 coats is needed to give adequate coverage
No matter what the sunscreen instructions say, you should reapply sunscreen every 2 hours when you are outdoors. sunscreen can be easily wiped or perspired off, therefore, you need to keep reapplying to provide adequate protection





