I have never used sunscreen so I should purchase spf 30+ sunscreen ,right? So which among following should I purchase menrox sunscreen cream spf30+ u.v. Avo lotion spf30+ u.v avo pro spf30+ gel. All are products by menarini india pvt. Ltd. I have read somewhere on net that higher spf sunscreen cause skin cancer. How many times should I use sunscreen, what is its connection with spf. Or otherwise which sunscreen is good to protect from uva and uvb rays. Sikn is neither oily nor dry.