Lipstick. Red lipstick against a straw background. Most lipstick products contains wax derived from petroleum. Scientists from the Green Chemistry Group at the University of York,UK,have developed a method of extracting wax from waste wheat straw. The technique,known as supercritical extraction,avoids the use of toxic solvents,by extracting compounds using carbon dioxide and high pressure | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / King-Holmes, James |
Taille de l’image : | 4096 px × 6144 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |