Women buying creams made of tiny particles 'used as guinea pigs' By Nic Fleming, Science Correspondent (Filed: 05/05/2006) Consumers who use a new generation of cosmetics are being used as "guinea pigs", scientists said yesterday. Researchers called for the tightening of testing procedures governing face and sun creams, dietary supplements and other products that harness the special properties of tiny particles of matter, known as nanotechnology. Some of the beauty products which make use of nanotechnology About 100 people in Germany suffered health problems at the end of March after using a bathroom sealant called Magic Nano. Nanotechnology involves working...