Nanoparticles (NPs) are defined as materials with dimensions smaller than 100 nm and presenting various shapes, i.e., spheres, rods, dendritic shapes, etc. This definition is accepted by the European Union (EU) Commission. It should be noted, however, that there exists no uniform definition of nanomaterials. The Environmental Protection Agency (EPA) emphasizes, in its opinion, the unique properties of NPs, which largely differentiate them from equivalent chemical compounds. In turn, the US Food and Drug Administration (USFDA) clearly states that NPs should exhibit dimension-dependent phenomena. The International Organization for Standardization (ISO), as the basic criterion, considers the nanoscale dimension of both the external dimension as well as the internal surface structure.
Nanoparticles are ubiquitous in cosmetic products as antioxidants and anti-reflectants. Examples include TiO2-NPs added to creams as a white pigment or Ag-NPs as a component of shampoos and toothpaste. In 1986, Christian Dior developed the first lysosomal anti-aging cream—Capture.
Nanosynth Group plc (LON:NNN) nano-technology business that originated in Nottingham from a partnership with Nottingham Trent University. Their core mission is to develop unique ways to produce and apply nanoparticles.
