What are nanoparticles? Are they safe in sun creams?

12/05/2020 — By Hannah Mepham

What are nanoparticles? Are they safe in sun creams?

At Green People we always strive to deliver the facts about any so called ‘controversial ingredients’ and nanoparticles used in sun creams are one of the latest to go under the microscope. 

 

Unsatisfied with the information that has been published on the subject of nanoparticles, our resident Research Scientist Ian Taylor, spent six months filing through all the unpublished studies on titanium dioxide nanoparticles (the type used in our organic sun creams) that he could get his hands on. He wanted to make sure that what we put in our sun protection products is completely safe, protective and natural.

 Green People Sun Cream

 

What are nanoparticles?

  • Titanium dioxide nanoparticles are tiny particles between 20 nm and 80 nm in size
  • They work to absorb UV light and provide an excellent natural sun protection barrier
  • They also absorb and scatter visible light, rendering sun creams invisible on the skin
 

Are nanoparticles safe?

  

Concern 1:

The first concern to address about nanoparticles is that because they are so small, it was thought that they may be able to penetrate the skin’s outer layer (or epidermis), reaching the living cells beneath and then pass into the bloodstream.

  

Answer: All studies show that when combined with creams or lotions which contain emulsifiers or binding agents, nanoparticles not only retain their UV light-absorbing capacity, but they ‘clump’ together. This creates much larger, extremely stable molecules that are far too large to penetrate the skin - think of it like trying to fit a football in a snooker pocket! As a result of this discovery, Ecocert has approved the use of nanoparticles as a sun-filter in certified organic products at a concentration of up to a 25%.

  

Concern 2:

There was also the concern that the nanoparticles in sun creams would become reactive with oxygen, spawning free radicals, because by making the particles smaller they had an increased ratio of surface area to density.

  

Answer: To solve this problem, titanium dioxide nanoparticles are manufactured with an extremely thin coating of silicates (basically sand or glass) to encase them in a protective layer and ensure that they are completely non-reactive and safe to use even on the most sensitive skin.

  

Why we use nanoparticles

The use of titanium dioxide nanoparticles in our organic sun lotions was not a decision that was taken lightly here at Green People, but after our extensive research we are completely confident that they are safe to use.

 

The claim that nanoparticles in sun creams can enter the bloodstream and affect living tissue has been totally disproven by every scientific test.

 

To doubly ensure the safety of using nanoparticles in our sun creams, we never combine them with any active ingredient that specialises in penetrating the skin (used in some of our products to provide deep moisturisation). This guarantees that they won’t be transported beneath the top layer of dead skin cells by any other skin penetrating substances.

 

Organic Children Scent Free Sun Cream - SPF30 50ml
4.9 star rating 15 Reviews

Organic Children Scent Free Sun Cream - SPF30 50ml

Handy size scent free SPF30 suitable for children with sensitive skin

£12.50

Buy Now
Scent Free Sun Cream - SPF30 200ml
4.8 star rating 1499 Reviews

Scent Free Sun Cream - SPF30 200ml

High factor fragrance-free SPF30 sun cream suitable for sensitive skin

£24.00

Buy Now
Edelweiss Sun Cream with Tan Accelerator - SPF15 200ml
4.8 star rating 749 Reviews

Edelweiss Sun Cream with Tan Accelerator - SPF15 200ml

Organic SPF15 sun cream with tan accelerator

£23.00

Buy Now
Organic Children Scent Free Sun Cream - SPF30 150ml
4.9 star rating 731 Reviews

Organic Children Scent Free Sun Cream - SPF30 150ml

High factor scent free SPF30 suitable for children with sensitive skin

£20.00

Buy Now

   

If you have any further questions about nanoparticles in sun cream, please email us at organic@greenpeople.co.uk or leave us a comment below.

    Share