Category B - full version without watermark 720x576 (check terms and conditions at The version with watermark is for free to embed Some skin creams have nano-ingredients, called buckyballs which look like little soccer balls made of carbon atoms. They're only a billionth-of-a-meter wide. Their discovery won a Nobel Prize and helped launch the field of nanotech. The skin-cream maker say buckyballs can prevent premature aging of the skin by acting as an anti-oxidant.. Some experts wonder about the safety of highly engineered nanostructures like these. That's because when particles get small, they tend to develop new chemical properties. That might mean unexpected risks.