Jonesy told me today that it can't be sold in Australia as a 40plus screen due to some obscure Govt. rule that says sunblock stating anything above 30 plus ( even though it may be 50plus ) is a no no.....strange ..I said but Jonesy says its about not giving us punters too much confidence in the product.....work that one out.......
Campers outlined the reason for this earlier
"SPF 15 blocks 93% of rays, while SPF 30 blocks 97%. Experts say that SPF ratings higher than 30 don't offer any further UV protection, and let the same 3% of UV rays through as SPF 30"
I assume that the theory is that people would logically think a sunscreen labeled SPF 100+ is far superior to a product labeled 30+ when in fact it gives the same results. Deceptive marketing could be used to mislead etc.
Rather than an obscure rule, I think it is a very forward thinking piece of legislation (rarity I know) that allows you to choose suncreens on other relative merits - like how long it stays on in the water and how safe/toxic it is - rather than who can "boost the highest" SPF rating. I guess that is why the label is 30+.....anything 30 SPF and over is all the same.