{"id":15452,"date":"2021-03-25T08:37:09","date_gmt":"2021-03-25T08:37:09","guid":{"rendered":"https:\/\/www.cosmed.fr\/?p=15452"},"modified":"2022-03-31T14:25:54","modified_gmt":"2022-03-31T14:25:54","slug":"%f0%9f%93%9dnanomateriaux-dans-les-cosmetiques-cosmed-demele-le-vrai-du-faux-2","status":"publish","type":"post","link":"https:\/\/www.cosmed.fr\/en\/%f0%9f%93%9dnanomateriaux-dans-les-cosmetiques-cosmed-demele-le-vrai-du-faux-2\/","title":{"rendered":"Nanomat\u00e9rial : Cosmed separates the real from the fake"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><strong><span class=\"has-inline-color has-vivid-red-color\">Addendum \u2013 July 2021<\/span><\/strong> _ <em>press<\/em> release<\/p>\n\n\n\n<div style=\"height:35px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Some substances may be nano in terms of the R-nano obligation and not nano according to the definition of the Cosmetic Regulation (EC) No 1223\/2009, and vice versa<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><span class=\"has-inline-color has-vivid-green-cyan-color\">TRUE<\/span><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The European Cosmetics Regulation defines a nanomaterial as &#8220;an insoluble or biopersistent material, intentionally manufactured and characterised by one or more external dimensions, or internal structure, on a scale of 1 to 100 nm;&#8221;<br>This definition is different from the one used in the French decree n\u00b02012-232 which should b used as the reference for the French R-nano declaration &#8220;substance intentionally manufactured at the nanometric scale, containing particles, unbound or in the form of an aggregate or in the form of an agglomerate, of which a minimum proportion of the particles, in the size distribution by number, have one or more external dimensions between 1nm and 100 nm. \u00bb.<br>Differences are thus based on the notions of intentionality, insolubility, bio-persistence and consideration of the internal structure.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Similarly, the European Commission&#8217;s Recommendation No. 2011\/696 gives an even different definition by referring to a threshold of 50%: &#8220;a natural, incidentally formed or manufactured material containing free particles, in aggregate or in agglomerate form, of which at least 50% of the particles, in numerical size distribution, have one or more external dimensions between 1 nm and 100 nm. \u00bb<\/p>\n\n\n\n<div style=\"height:40px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">The definition of nanomaterial will soon be harmonised<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong><span class=\"has-inline-color has-vivid-green-cyan-color\">TRUE<\/span><\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The European strategy for sustainability in the field of chemical products published on 14 October 2020 foresees to review and harmonise the definition of nanomaterials with an indicative deadline of 2021 in order to ensure consistency in the different legislations. To this end, discussions are underway within European working groups, such as the &#8220;nanomaterials&#8221; working group on cosmetic products, which met on January 28th, a meeting in which Cosmed participated as a member.<\/p>\n\n\n\n<div style=\"height:52px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Silicas are partly soluble and therefore considered non-nano<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The SCCS, in its opinion on silica (SCCS\/1606\/191 ), specifies the solubility threshold to be taken into account: 33.3g\/L (defined according to USP 38 and USP 38NF332 ), whereas the threshold of 100mg\/L is frequently used by manufacturers, leading to non-compliance. The SCCS specifies that given the solubility values of the silicas evaluated in the SCC\/1606\/19 opinion, none of them can be considered as soluble with regard to Regulation (EC) No 1223\/2009.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">There are no official test methods for detecting nano<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-green-cyan-color\">TRUE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">There is no official method, but there are opinions expressed by the JRC, OECD and other publications that address this issue; the test protocols used to define the nano criterion as well as the sample preparation have, in some cases, a strong influence on the results. Above all, an appropriate method(s) should be used. In order to ensure reliable results, it is recommended to combine different analytical techniques.<br>Many suppliers claim a non-nano form of their raw material on the basis of DLS (dynamic light scattering) or laser particle size analysis. However, these analyses do not allow the differentiation between aggregates\/agglomerates and primary particles and generate false negatives due to overestimation of particle sizes. This analysis alone will not defend the non-nano nature of a substance.<\/p>\n\n\n\n<div style=\"height:59px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Scanning Electron Microscopy (SEM) is a reference technique for nanometric characterisation<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-green-cyan-color\">TRUE<\/span> <span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">This technique makes it possible to observe the presence of nano particles through a direct measurement of the size of the primary particles. It also takes into account the notion of criterion in number that indirect techniques do not provide or provide incorrectly.<br>As for the sp-ICPMS technique, it can also be used by the control authorities for certain matrices, certain elements and certain particle shapes. However, it cannot be applied to all nanomaterials, as it may present biases, such as not being able to distinguish between subpopulations of different size characteristics. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><span class=\"has-inline-color has-vivid-red-color\"><strong><em>Addendum July 2021:<\/em><\/strong> SEM is the preferred tool of French authorities to characterize nanos. However, following a control, analyses conducted separately by the administration and by an industrialist, on the same raw material (TIO2), in two analysis centers by SEM technology revealed different results. The SEM technology is affected by a variability of results; Cosmed, like the SCCS and the JRC, recommends to couple a SEM analysis and an sp-ICPMS analysis in order to make the results more reliable.<\/span><\/p>\n\n\n\n<div style=\"height:56px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Aggregates and agglomerates are not considered as nano<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">To confirm the nano status it is necessary to look at the primary particle or the internal structure.<br>Aggregates of nanoparticles (strong bonds) or agglomerates of nanoparticles (weak bonds) are considered to fall within the definition of a nanomaterial.<br>There is currently no technique capable of define whether the bonds between particles are strong (covalent) or weak (electrostatic). For example, titanium nanoparticles grafted onto the surface of mica wafers are nanostructured materials that can release nanoparticles.<\/p>\n\n\n\n<div style=\"height:43px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Some methods of sample preparation, including sonication, can create nano particles by breaking up the material<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-green-cyan-color\">TRUE<\/span> <span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">On metal oxide materials such as TiO2, ZnO, iron oxides or even silica, sonication will simply deagglomerate the particles. This method is not powerful enough to break a particle in two. It only breaks up the agglomerates. This is very important to have a good preparation of the samples for SEM analysis.<br>On the other hand, on certain materials such as hydroxyapatite platelets, clays or naturally extracted calcium carbonate, sonication can cause the appearance of nanometric fragments.<\/p>\n\n\n\n<div style=\"height:47px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">There is a threshold at which a substance contained in<br>a mixture is considered nano<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The definition of &#8220;nanomaterial&#8221; in the cosmetics regulation does not include a minimum threshold: &#8220;an insoluble or biopersistent material, intentionally manufactured and characterised by one or more external dimensions, or internal structure, on a scale of 1 to 100 nm&#8221;.<br>Thereby, any ingredient whose the particle size distribution curves with values below 100 nm should be considered a nanomaterial, subject to information on its solubility and bio-persistence. <br>However, the DGCCRF applies a tolerance of 10% in terms of the number of nanoparticles to the results of analyses carried out on products sampled during controls. This approach makes it possible to cover measurement uncertainties and to guard against the situation where the presence of nanoparticles results from environmental contamination.<\/p>\n\n\n\n<div style=\"height:67px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">The person responsible cannot be held liable for the presence of nano if the supplier certifies the opposite<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">The nano nature of a raw material is to be determined on a case-by-case basis according to the characteristics of the substance. This is the responsibility of the responsible person who is placing the cosmetic product on the market to analyse all the data in order to conclude on the nano character or not of the ingredient he uses.. The supplier as well as the safety assessor should &#8220;participate&#8221; in this analysis in order to make a fair and complete study<\/p>\n\n\n\n<div style=\"height:48px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">If my supplier certifies that the substance is non-nano I don&#8217;t have to check anything<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"has-inline-color has-vivid-red-color\">FALSE<\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Given the current state of knowledge and available data, a simple statement of &#8220;no nanomaterial&#8221; without proof that adequate analyses have been carried out is not likely to meet the requirements of the Regulation. A particle size distribution curve, expressed as a number of particles, should support the supplier&#8217;s reasoning.<br>If the ingredient supplier is unable to provide this evidence this is the responsibility of the responsible person to conduct the appropriate analyses.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link\" href=\"https:\/\/www.cosmed.fr\/app\/uploads\/2022\/03\/cp-cosmed-en-cosmed-separates-the-real-from-the-fake-addendum-july-2021.pdf\">download the press release<\/a><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Addendum \u2013 July 2021 _ press release Some substances may be nano in terms of the R-nano obligation and not nano according to the definition of the Cosmetic Regulation (EC) No 1223\/2009, and vice versa TRUE The European Cosmetics Regulation defines a nanomaterial as &#8220;an insoluble or biopersistent material, intentionally manufactured and characterised by one [&hellip;]<\/p>\n","protected":false},"author":30881,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[444,443],"tags":[],"secteurs":[],"class_list":["post-15452","post","type-post","status-publish","format-standard","hentry","category-press-release-2","category-press-release"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - 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