I ordered a derma roller. I know the medical community generally advises against the use of these. But Dr. Lim, an Australian dermatologist, states that they are safe if done under .3 mm and not frequently. Anyways, my question is how can I sterilize it when I just get it. I am ordering from QVC so I trust that it is new and unused. But, I still want to ensure I disinfect from any blood borne pathogens. What substance should I use to sanitize it? Rubbing alcohol, beta-iodine, bleach? Thanks