Nanoparticles

• A nanoparticle is a structure 1-100nm in size and contains a few hundred atoms
• Nanoparticles have different properties from bulk materials because of their large surface area to volume ratio
• Benefits of Nanoparticles in sunscreen

  • Better skin coverage
  • Effective protection from the suns rays
  • clear and colourless
  • do not degrade when exposed to sun
• Risks of nanoparticles

  • Potential cell damage
  • harmful effects on the environment