Celebrity TYPE OF SKIN When should you cover up in the summertime 11am-3pm? Very fair, burns easily e.g. Renee Zellweger, Kelly Osbourne, Gwyneth Paltrow, Nicole Kidman, Marcia Cross , Ewan McGregor, Rhys Ifans, Prince Harry UV Index 2-3 and higher Fair but tans e.g. Colleen McLoughlin, Sienna Miller, Jennifer Aniston, Victoria Beckham, Teri Hatcher , Brad Pitt, Tom Cruise, David Beckham UV Index 3 and higher Olive or brown e.g. Jennifer Lopez, Penelope Cruz, Laila Rouass, Parminder Nagra, Eva Longoria and Jesse Metcalf , Amir Kahn, Ronaldo UV Index 5 and higher Black e.g. Naomi Campbell, Sarpong June, Venus and Serena Williams, Will Smith, Lemar, Denzel Washington UV Index 6 and higher Over exposure to ultra violet rays measured by the UV Index causes skin cancer, probably the most common cancers in the UK.The findings contradict mast cells' reputation for being the trigger-happy gunslinger within an allergic reaction. Located just beneath your skin and in the loose connective tissue through the entire body, mast cells lie in wait for intruders. Filled with granules containing inflammation-inciting molecules such as histamine, they sometimes respond to non-threatening trespassers also, such as pollens or plant oils. These confrontations cause allergies and, in acute cases, the life-threatening overreaction of anaphylaxis observed in bee-sting or peanut allergy symptoms.