Titanium dioxide uses are various; it is effective in car industry, food industry, pharmaceutical industry, etc. One of titanium dioxide characteristics is very interesting for medical use: under certain conditions, when it is lighted with ultraviolet rays, it becomes photo catalyst. This desirable feature of titanium dioxide can also find its application in technical science when it comes to energy sources, what is object of research in Japan. When it comes to sun protection it is important to have in mind that we have to protect ourselves form dangerous sun radiation; or at least neutralize it. Scientists and titanium dioxide manufacturers believe that photo catalytic features of titanium dioxide could lead to creating of free radicals, due to strong oxidative effect on the water in cells. In the end this could potentially lead to tumor growth in skin cells.
In order to prevent this harmful effect, besides minimization, majority of manufactures in titanium dioxide manufacturing additionally coats nano particles of titanium dioxide. Intention is clear: to insert artificially produced protective barrier between titanium dioxide and skin cells. Very thin layer of organic or other mineral ingredient will prevent their contact and disable release of free radicals into skin (that would happen due to ultraviolet radiation on titanium dioxide).
Coating also improves physical and chemical features of nano particles, because it decreases risk of creation of clusters in protective substance formulation. Coating of nano particles of titanium dioxide can be organic (such as silicones) or non-organic (such as aluminum hydroxide). When speaking of amount of coating, they are only 1-2% present in the amount of such titanium dioxide, and it doesn't create significant changes in previously described optical features of titanium dioxide when it comes to it protective coating on skin.
What is titanium dioxide and how can it affect our skin?
Another concern is a possibility of transfer to skin these nano particles of mineral ingredients that protect from sun. Scientifically speaking, up until now, there have been no evidence of titan dioxide presence in blood stream from skin surface, and according to scientific institutions, titanium dioxide uses for sunblock protection can be considered safe for health. There are no scientific evidence that nano particles can get into the blood stream through skin, as it seems that they stay on the surface of skin, or more precisely, on the so-called "dead" layer of surface squamous skin cells. One study showed that nano particles of titanium dioxide can be found only in the top layer of skin even after multiple applications. Only place where they got deeper in the skin were openings of sebaceous glands, but even there it was very small amount of it (less than 1% of applied nano particles). However development of nano particles is carefully monitored because certain disorders can develop in laboratory conditions-but still only on animals.
dioksida mogu pronaći samo u najviše površnim slojevima kože, čak i nakon višekratnog nanošenja na kožu. Jedino mjesto na koži gdje su mjestimično prodrle tek ponešto dublje su bili otvori lojnica, ali se tu radilo o vrlo malim količinama (manje od 1 % nanešenih nano čestica). Ipak, razvoj situacije oko nano čestica se i dalje pomno motri jer se neki poremećaji mogu izazvati u laboratorijskim uvjetima, doduše na životinjama.
zaključno rečeno, smanjenje prirodne veličine mineralnih čestica uklanja većinu prigovora na bijeli film koji zaostane na koži, ali i dovodi do dvojbi oko njihove zdravstvene sigurnosti na duge staze.
i titan dioksid je jedan od TOP 50 minerala, sudeći prema industrijski proizvedenim količinama, i kao i svaki drugi mineralni prah sa sitnim česticama, ima potencijal za uzrokovati promjene na plućima bude li udahnut. Što manji promjer čestica, to veći rizik odnosno to dalje prodiru takve čestice u plućno tkivo. Prvenstveno se radi o riziku po zdravlje onih koji su zaposleni tamo gdje se prerađuju minerali gdje su već zabilježeni su slučajevi plućne fibroze, a sumnja se i na mogućnost razvoja tumora pluća uslijed prodora ultrafinih čestica mineralne prašine iz radnog okruženja.
In order to prevent this harmful effect, besides minimization, majority of manufactures in titanium dioxide manufacturing additionally coats nano particles of titanium dioxide. Intention is clear: to insert artificially produced protective barrier between titanium dioxide and skin cells. Very thin layer of organic or other mineral ingredient will prevent their contact and disable release of free radicals into skin (that would happen due to ultraviolet radiation on titanium dioxide).
Coating also improves physical and chemical features of nano particles, because it decreases risk of creation of clusters in protective substance formulation. Coating of nano particles of titanium dioxide can be organic (such as silicones) or non-organic (such as aluminum hydroxide). When speaking of amount of coating, they are only 1-2% present in the amount of such titanium dioxide, and it doesn't create significant changes in previously described optical features of titanium dioxide when it comes to it protective coating on skin.
What is titanium dioxide and how can it affect our skin?
Another concern is a possibility of transfer to skin these nano particles of mineral ingredients that protect from sun. Scientifically speaking, up until now, there have been no evidence of titan dioxide presence in blood stream from skin surface, and according to scientific institutions, titanium dioxide uses for sunblock protection can be considered safe for health. There are no scientific evidence that nano particles can get into the blood stream through skin, as it seems that they stay on the surface of skin, or more precisely, on the so-called "dead" layer of surface squamous skin cells. One study showed that nano particles of titanium dioxide can be found only in the top layer of skin even after multiple applications. Only place where they got deeper in the skin were openings of sebaceous glands, but even there it was very small amount of it (less than 1% of applied nano particles). However development of nano particles is carefully monitored because certain disorders can develop in laboratory conditions-but still only on animals.
dioksida mogu pronaći samo u najviše površnim slojevima kože, čak i nakon višekratnog nanošenja na kožu. Jedino mjesto na koži gdje su mjestimično prodrle tek ponešto dublje su bili otvori lojnica, ali se tu radilo o vrlo malim količinama (manje od 1 % nanešenih nano čestica). Ipak, razvoj situacije oko nano čestica se i dalje pomno motri jer se neki poremećaji mogu izazvati u laboratorijskim uvjetima, doduše na životinjama.
zaključno rečeno, smanjenje prirodne veličine mineralnih čestica uklanja većinu prigovora na bijeli film koji zaostane na koži, ali i dovodi do dvojbi oko njihove zdravstvene sigurnosti na duge staze.
i titan dioksid je jedan od TOP 50 minerala, sudeći prema industrijski proizvedenim količinama, i kao i svaki drugi mineralni prah sa sitnim česticama, ima potencijal za uzrokovati promjene na plućima bude li udahnut. Što manji promjer čestica, to veći rizik odnosno to dalje prodiru takve čestice u plućno tkivo. Prvenstveno se radi o riziku po zdravlje onih koji su zaposleni tamo gdje se prerađuju minerali gdje su već zabilježeni su slučajevi plućne fibroze, a sumnja se i na mogućnost razvoja tumora pluća uslijed prodora ultrafinih čestica mineralne prašine iz radnog okruženja.