Sun Screen – Things YOU Need to Know
The Summer Holidays are fast approaching …
The effectiveness of water – resistant product SPF 30 could drop to SPF 15 after a swim. Plus towel drying is also likely to rub off sunscreen.
This is an indication of how long sunscreen protects against ultraviolet radiation that’s linked to skin cancer and is the main cause of sunburn (UVB)
The SPF number doesn’t relate to the amount of protection a product provides it relates to time from when YOU step into the sunshine, depending on your own skin type – if an SPF30 product is applied correctly it will protect you for 30 times longer than if you wore no sunscreen. The clock doesn’t get reset each time you reapply the time is set for the day and if you don’t apply enough it will not provide its full SPF.
Cancer Research UK says it’s all about ‘How well you put it on’ for example
Most people under-apply sunscreens, using ¼ to ½ the amount required. Using half the required amount of sunscreen only provides the square root of the SPF. So, a half application of an SPF 30 sunscreen only provides an effective SPF of 5.5!