Vitamin D and Sun Protection
Humans get 90% of their vitamin D from the sun and that is why it is called the “sunshine vitamin”. Considerable amounts of vitamin D are made by the skin when wavelengths of light between about 295nm and 305nm penetrate the skin (UVB).
Most people spend their daylight hours indoors or in cars, and are therefore shielded from vitamin D forming light. We generally produce vitamin D when we enjoy outdoor activities such as walking, beach going, bike riding or sporting events.
Unfortunately for vitamin D production, these activities coincide with the use of sunscreens because they screen out up to 98% of these UVB rays.
“Sunscreens are a dilemma, because they block UVB light.” Harvard Health Letter
These particular UVB rays are also only "on show" in the warmer summer months as in the cooler months, the sun is too low for these rays to get through our atmosphere.
Adding to this dilemma is the fact that only about 0.5% of the UVB rays that passes through the atmosphere are these vitamin D producing rays.
These vitamin D forming wavelengths are also filtered by buildings, glass, clothing, hair, clouds, and sunscreens.
Other causes that affect our vitamin D production are the colour of our skin, our health, where we live and our age - from our 50's, our skin’s ability to make vitamin D begins to diminish.
Is it no wonder that 1 in 3 Australians are vitamin D deficient.
"Solar D’s unique formula permits the passage of some of the sunlight your skin uses naturally to make vitamin D.” Michael F. Holick, PhD, MD (the world’s foremost authority on vitamin D).
There are 20 or so active ingredients that are approved by the TGA and FDA in sunscreens. Different active ingredients in sunscreens absorb UV light differently across the UV spectrum.
The difference in protection between SPF 15, SPF 30 and SPF 50 is much smaller than the difference between applying a sunscreen properly and improperly. So depending on the SPF factor, sunscreens screen out between 95% to 98% of all the sun’s rays, including the vitamin D producing rays.
Solar D sunscreens include the safest ingredients combined with a patented process that opens the window to permit some of the light that our body uses to produce vitamin D, whilst passing the TGA and FDA testing for SPF 30 or SPF 50.
* Harvard Health Publications - Vitamin D: Enjoying its day in the sun
- Solar D SPF50 Daily Use, 100ml Tube, $13.95
- Solar D SPF50 Daily Use, 200ml Tube, $18.95
- Solar D SPF50 Daily Use, 200ml Spray, $19.95
- Solar D SPF30 Active, 100ml Tube, $13.95
- Solar D SPF30 Active, 200ml Spray, $19.95
- Solar D SPF30 Kids, 100ml Tube, $13.95
Solar D will be stocked at Woolworths, IGA, Target, Priceline, Chemmart, Pharmacy Choice, Amcal, Amcal Max, Guardian and API, Priceline and Soul Pattinsons.
Editor’s Note: We used Solar D on our recent (Summer) cruise to the South Pacific and found it easy to apply and use. As a natural red-head, I need max protection and I was very pleased with the results.