In a new study, biologists report that melanocyte skin cells detect ultraviolet light using a photosensitive receptor previously thought to exist only in the eye. This eye-like ability of skin to sense light triggers the production of melanin within hours, more quickly than previously thought, in an apparent rush to protect against damage to DNA.

by Bob Root It has been about three years of communication with the FDA before the new sunscreen regulations came out June 11, 2011.  The FDA requested input from many companies and organizations.  Keys and other presented facts, opinion and wishes.  For some the time and the angle of the new direction have been touted as too little and too late.  I for one am happy with the changes.

By Bob Root It is a constant quest to understand and then explain the effects of UVA and UVB on our skin and our lives.  Our involvement with the Skin Cancer Foundation, Johns Hopkins, Mayo Clinic, Scripps and various universities expose me to all sorts of information.  I am always searching for the simplest and best explanations to help people understand UV radiation.  Clearly I feel that I stand on the shoulders of many scientists and advocates.  Below is by far the best I have seen as a simple elegant guide.  It comes from the Skin Cancer Foundation and has an equally simple title. Understanding UVA and UVB