Thanks for sharing. I usually question people's credibility (such as my mom who reads stuff off the internet), but given that you are studying this subject makes it really interesting. I guess there isn't really a real way to know for sure which SPF products are safer. Do you mean like how Hawaiian Tropic sunblock lotions usually does't rub and disappear into the skin and leaves a white cast/layer versus something like Neutragena Ultra Sheer SPF 50 that just disappears into the skin effortlessly? *throws it away* LOLAlso, their small size means that they go undetected by the body's immune defenses. NP that find their way into the body (ingestion, respiration, injection) will therefore find their way to vital organs easily, such as the brain, lungs and other soft tissues and lodge there. The shape of the particles also play a part - needle-like particles penetrate more easily than spheres. Nonetheless, it is precisely because of this penetrating ability of NP that hospitals have started using them as a diagnostic tool. The particles are injected into your blood stream and eventually collect at cancerous cell clusters, thereby allowing the doctor to pinpoint the location of the cancer.
As I mentioned in my previous post, there are quite a few obstacles to establishing safety regulations for NP because people disagree on the cut-off size of particles before they are labelled NP, and also on the methods used in studies. What happens in a lab where one exposes cells to pure unaltered NP is not the same as what happens in real life: take the case of sunblock lotion. We apply it onto our skins and we go swimming in the sea. Some of it is washed away by the water and is ingested by organisms or undergoes reactions with stuff in the water etc. It eventually finds its way back into our bodies through the food chain or through us drinking water, but in a slightly altered form. There is no way of telling precisely what has happened in between. This is why certain universities have mini-ecosystems in giant tanks dedicated to studying exactly what happens to NP when they get into the environment. These studies are underway but take quite some time, so while the scientific community is starting to realise the associated health risks of NP, the cosmetic industry continues using them but does not actively advertise NP in their products anymore. Therefore, there is no way of knowing what size and shape the particles used in our products are. Which is why for now, a product containing titanium dioxide that flashes back is actually a safer product than one that doesn't!
This is why I love Spektra!!Thanks for sharing. I usually question people's credibility (such as my mom who reads stuff off the internet), but given that you are studying this subject makes it really interesting. I guess there isn't really a real way to know for sure which SPF products are safer. Do you mean like how Hawaiian Tropic sunblock lotions usually does't rub and disappear into the skin and leaves a white cast/layer versus something like Neutragena Ultra Sheer SPF 50 that just disappears into the skin effortlessly? *throws it away* LOL
This is FASCINATING! Thank you so much- you've explained it very clearly.Also, their small size means that they go undetected by the body's immune defenses. NP that find their way into the body (ingestion, respiration, injection) will therefore find their way to vital organs easily, such as the brain, lungs and other soft tissues and lodge there. The shape of the particles also play a part - needle-like particles penetrate more easily than spheres. Nonetheless, it is precisely because of this penetrating ability of NP that hospitals have started using them as a diagnostic tool. The particles are injected into your blood stream and eventually collect at cancerous cell clusters, thereby allowing the doctor to pinpoint the location of the cancer.
As I mentioned in my previous post, there are quite a few obstacles to establishing safety regulations for NP because people disagree on the cut-off size of particles before they are labelled NP, and also on the methods used in studies. What happens in a lab where one exposes cells to pure unaltered NP is not the same as what happens in real life: take the case of sunblock lotion. We apply it onto our skins and we go swimming in the sea. Some of it is washed away by the water and is ingested by organisms or undergoes reactions with stuff in the water etc. It eventually finds its way back into our bodies through the food chain or through us drinking water, but in a slightly altered form. There is no way of telling precisely what has happened in between. This is why certain universities have mini-ecosystems in giant tanks dedicated to studying exactly what happens to NP when they get into the environment. These studies are underway but take quite some time, so while the scientific community is starting to realise the associated health risks of NP, the cosmetic industry continues using them but does not actively advertise NP in their products anymore. Therefore, there is no way of knowing what size and shape the particles used in our products are. Which is why for now, a product containing titanium dioxide that flashes back is actually a safer product than one that doesn't!
You're welcome! I'm glad that at least other people will know now and can pick their products more prudently!This is FASCINATING! Thank you so much- you've explained it very clearly.
PermDoes anyone know if this foundation is LE or Perm? I'm becoming interested since it's moisturizing and lightweight.
You mean her shoulder? :lmao: They definitely need to remove it, or make it more pronounced. It's just an out-of-focus blob.Has anyone seen the promo pic for this yet? Am I the only one completely distracted by the phallus creeping up from the bottom of the picture?