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gulio.
User deleted
Tinture per capelli: nuove regole UE
Tinture per capelli più sicure nell'Ue grazie ad una nuova direttiva ad hoc approvata dalla Commissione europea, che limita l'uso di altre 24 sostanze
oltre a quelle già regolamentate.
Tinture per capelli più sicure nell'Ue grazie ad una nuova direttiva ad hoc approvata dalla Commissione europea, che limita l'uso di altre 24 sostanze
oltre a quelle già regolamentate. Secondo le stime dell'esecutivo di Bruxelles, sono circa sei donne su dieci quelle che fanno uso di una colorazione per capelli e le vendite delle tinture sono in costante aumento.La direttiva Ue sui cosmetici cerca di assicurare che questi prodotti contengano solo sostanze sicure e dal 2003 la Commissione europea e gli Stati membri hanno messo a punto un piano d'azione per valutare e regolamentare le colorazioni per capelli, richiedendo all'industria dei cosmetici di fornire informazioni sul contenuto delle sostanze impiegate e sulla loro potenziale tossicità. Da allora la Commissione europea ha vietato l'uso di 18 composti e ha limitato l'impiego di altri 52, ai quali se ne aggiungono altri 24. Un ultimo pacchetto di 45 sostanze è ora al vaglio del Comitato scientifico Ue per la sicurezza dei consumatori e dopo aver ricevuto tutti i pareri sarà l'esecutivo europeo a proporre eventuali nuove limitazioni o divieti.
Articolo Di Cibbi-
http://eur-lex.europa.eu/LexUriServ/LexUri...208:FULL:IT:PDF
direttive UE leggi a pag 10.
terranuova.
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gulio.
User deleted
E'ben noto che le tinture per capelli sono piene di agenti chimici tossici deleteri per malati di sensibilità chimica multipla abbiamo fatto una ricerca ed ecco il risultato non occorre tradurre per capire quanta merda c'è dentro.
testo in inglese poi proveremo a tradurlo in italiano, se ce ne sarà il tempo .
ma non occorre essere geni per capire i nomi dei componenti che fanno parte delle tinture. basta leggere.
http://monographs.iarc.fr/ENG/Monographs/vol99/mono99-17.pdf
OCCUPATIONAL EXPOSURES OF HAIRDRESSERS AND
BARBERS AND PERSONAL USE OF HAIR COLOURANTS
1. Exposure Data
1.1 Introduction
Throughout history and across cultures, women as well as men have felt the need to
change the natural colour of their skin, lips and hair, or to restore the colour of greying
hair. For thousands of years, cosmetic dyes have been a part of all human cultures. The
use of hair dyes can be traced back at least 4000 years; evidence from royal Egyptian
tombs suggests the use of henna for dyeing of hair and fingernails. Henna contains the
dye Lawsone (2-hydroxy-1,4-naphthoquinone), which, in its pure form, is also used as a
synthetic direct (semi-permanent) hair dye. In the days of the Roman Empire, grey hair
was darkened by combing it with lead combs dipped in vinegar. Interestingly, it has
recently been shown that this application produces darkening of grey hair by deposition of
lead sulfide nanoparticles (diameter of about 5 nm) on the surface of the hair (Walter et
al., 2006; Nohynek et al., 2004a). Traditional, lead acetate-based products for darkening
grey hair are still found on the international market, although their importance is minor.
Today, millions of consumers use a large variety of cosmetic dyes and pigments to
change the appearance of their skin, lips, nails or hair. Hair dyeing has become a common
practice in modern industrialised societies; the hair-dye industry has estimated
(unpublished data) that between 50 and 80% of women have used hair dyes in the USA,
Japan and the European Union. During the last century, synthetic dyes have taken a
pivotal role in hair colouration. Their chemistry, use and safety have been reviewed
(Corbett 1999, 2000; Corbett et al., 1999; Nohynek et al., 2004a; Zviak & Millequant
2005a,b).
1.2 Composition of modern hair dyes
Modern hair dyes may be classified into the following categories: oxidative
(permanent) dyes, direct (temporary or semi-permanent) dyes, and natural dyes.
In the frequently used code system introduced by the European Cosmetic Association
(COLIPA), hair-dye ingredients are classified into classes A, B or C: class A includes
IARC MONOGRAPHS VOLUME 99
ingredients of oxidative hair dyes, class B those of semi-permanent hair dyes, and Class C
those of temporary hair dyes (see examples in Tables 1.4, 1.5, 1.6).
1.2.1 Oxidative (permanent) hair dyes
(a) Composition
Oxidative (permanent) hair dyes are the most important group and have a market
share in the EU or the USA of approximately 80% (Corbett et al., 1999).
Oxidative (permanent) hair dyes consist of two components that are mixed before use
and generate the dye within the hair by chemical reactions. Their chemistry and use has
recently been reviewed (Corbett et al., 1999; Zviak and Millequant, 2005b). Modern
oxidative dyes contain several ingredients with different functions (examples in
507Table 1.1) as follows:
Primary intermediates: arylamines (para-phenylenediamine (PPD), paratoluenediamine
(PTD), substituted para-diamines), para-aminophenols (paraaminophenol,
4-amino-meta-cresol), 4,5-diaminopyrazole and pyrimidines. Oxidation
of these substances and their chemical coupling with modifier (coupler) molecules
result in coloured reaction products.
Couplers or modifiers: these include meta-substituted aromatic derivatives
(m-phenylene-diamines, meta-aminophenols, resorcinol), pyridines and naphthols.
Couplers determine the final shade by reaction with the oxidized form of primary
intermediates, followed by further oxidative coupling reactions.
Oxidants: hydrogen peroxide, urea peroxide, sodium percarbonate, perborate.
Alkalinising agents: ammonia, monoethanolamine or aminomethylpropanol.
(b) Relative concentration of the components
The actual colouring mixture is prepared extemporaneously, before application to the
hair, by mixing, generally weight by weight, a solution containing the precursors and the
other components of the formula with a solution containing hydrogen peroxide called
developer. Each of these two solutions amounts in general to 50 g per use, but it is not
uncommon to use 40 g of a colourant formula mixed with 60 g of developer. With nonlightening
oxidative colouring the amount of developer may be twice the amount of
colourant formula. The final mixture applied to the hair amounts to about 100 g but can
vary according to the amount of hair to be treated.
Given that it is diluted by the developer, if the original concentration of a precursor
(base or coupler) is X, its concentration in the final mixture coming into contact with the
hair, is, at most X/2.
In practice, the initial concentration X used lies between 0.006% and 7%. This range
of concentrations corresponds to a spectrum of shades from very pale blond to black.
keep on reading the report and all the toxic chemicals we place on our hairs.
this can developing in MCS .
Please read from page 4 and so on till page 160.
andate alla pagina 4 e continuate a leggere i veleni che mettono sulle nostre teste proseguite e rimarrete estrefatti-
per quanti componenti la UE possa tagliare non saranno mai abbastanza!!!.
tinture per capelli dannose lo ha stabilito la U.E |