9
On the other hand, an analysis of only
the more recent studies of more effective sunscreens
(many of which were effective against both UV-A and UV-B
radiation) concluded that these products do appear to
have a protective effect.10
The ideal sunscreen should protect the skin against
both UV-B11
and UV-A12
radiation, scavenge free radicals,
and contain enzymes or other active ingredients that will
stimulate DNA repair systems. Obviously, these products
must also be safe and stable.