UV-A penetrates much deeper into the skin than UV-B and is useful in keeping skin firm and without wrinkles by degrading elastins and collagen.  
Facial creams that claim UV protection prevents damage only against UV-B rays.  At this time, companies are not required to back up UV-A claims on their labels.
UV-A penetrates windows so even if work work indoors, you still need to be protected from UV-A rays.
More expensive creams do not give better protection.  Ask your dermatologist for specific recommendations.
 
 
 
 
 



