Tanja!
V clanku sem prebrala, da negovalna cistilna sredstva naj ne bi vsebovala sodium lauryl sulfata. Zanima me zakaj je tako skodljiv in kaksna so druga imena za to sredstvo?
LP, Simona
Precej je agresiven - ko so delali teste z malo večjo količino te sestavine, je večina ljudi dobila alergije ali izpuščaje, ali pa vsaj pordelo kožo.
To je edino ime za to stvar. Sodium laureth sulfate pa je boljši.
Ampak je tudi priporocljivo,ce ga ni v cistilu, ali je vseeno?
LP, Simona
Mene tudi zanima ali je boljše, da naprimer Sodium laureth sulfata v tekočem milu ni, ali je čisto vseeno, če je ali ga ni. Še posebej me zanima ta sestavina v primeru, da ima nekdo zelo občutljivo kožo.
Šele zdajle sem opazila to temo. Oba, tako sodium laureth sulfat, kot sodium lauryl sulfat sta enako nevarna (karcenogena - maligna). Prehajata skozi kožo in sluznice. Sta pa zelo poceni in učinkovita detergenta (močna pena), zato si ju proizvajalci dovoljujejo dodajati v majhnih količinah; češ, da v majhnih količinah nikomur ne škodita.
Sodium laureth sulfate = Sodium Lauryl Ether Sulfate
Jerca oprosti, ampak to ni res.
sodium laureth sulfate. Can be derived from coconut; it is used primarily as a detergent cleansing agent. It is considered gentle and effective.
sodium lauryl sulfate. There has been a great of misinformation about sodium lauryl sulfate (SLS) being circulated on the Internet. Used primarily as a detergent cleansing agent SLS can be derived from coconut. Although it is a potent skin irritant it is not toxic or dangerous for skin. In concentrations of 2% to 5%, SLS can cause allergic or sensitizing reactions in lots of people. It is used as a standard in scientific studies to establish irritatancy or sensitizing properties of other ingredients (Sources: European Journal of Dermatology, September-October 2001, pages 416?419; American Journal of Contact Dermatitis, March 2001, pages 28?32; and Skin Pharmacology and Applied Skin Physiology, September-October 2000, pages 246?257). Being a skin irritant, however, is not the same as a link to cancer, which is what erroneous warnings on the Internet are falsely claiming about this ingredient!
According to Health Canada, in a press release of February 12, 1999 (www.hc-sc.gc.ca/), ?A letter has been circulating the Internet which claims that there is a link between cancer and sodium laureth (or lauryl) sulfate (SLS), an ingredient used in . Health Canada has looked into the matter and has found no scientific evidence to suggest that SLS causes cancer. It has a history of safe use in Canada. Upon further investigation, it was discovered that this e-mail warning is a hoax. The letter is signed by a person at the University of Pennsylvania Health System and includes a phone number. Health Canada contacted the University of Pennsylvania Health System and found that it is not the author of the sodium laureth sulfate warning and does not endorse any link between SLS and cancer. Health Canada considers SLS safe for use in cosmetics. Therefore, you can continue to use cosmetics containing SLS without worry.? Further, according to the American Cancer Society?s Web site (www.cancer.org), ?Contrary to popular rumors on the Internet, Sodium Lauryl Sulfate (SLS) and Sodium Laureth Sulfate (SLES) do not cause cancer. E-mails have been flying through cyberspace claiming SLS and SLES causes cancer ? and is proven to cause cancer.... A search of recognized medical journals yielded no published articles relating this substance to cancer in humans.?
Človek v množici informacij res ne ve več, komu bi verjel. Jaz do danes nisem vedela, da je možno te spojine pridobiti tudi iz kokosa. Tanja, ali si opazila, da je za obe spojini napisano "can be derived" from coconut. Pred leti smo mi v šoli sami pacali (DBS - kemično enaka sestavina, kot je SLS). Najprej smo v laboratorijskih reaktorjih z žveplovo VI kislino sulfonirali benzen, nato smo naslednji dan vse skupaj obdelovali z Na hidroksidom..., pa da ne morim s celim postopkom; skratka huda kemija. Na koncu smo dobili spojino, katere kapljica bi lahko zapenila cel laboratorij. Nam se je že vsem skupaj kar dobro vrtelo v glavi, profesor pa se je smejal in dejal, da je to osnova skoraj vseh čistil in tekočih mil. Mi smo to zadevo nato redčili in smo jo uporabljali za pomivanje steklovine. je pa to prav gotovo velik "biznis", ki ga ne gre kar tako opustiti ! ? !
Ko sem sedaj brskala po internetu, sem našla ogromno linkov, ampak prilagam samo bolj "resne" in novejše:
http://www.natural-health-information-centre.com/sodium-laur yl-sulfate.html
http://spacepony.com/dangerous.ingredients.html
http://householdproducts.nlm.nih.gov/cgi-bin/household/brand s?tbl=chem&id=8
Jerca, saj vem, da je na netu sve i svašta, in da je težko ločiti zrnje od plevela, ampak vseeno glede veliko kozmetičnih sestavin krožijo razne neumnosti. Tudi za silikone npr., da so kancerogeni in gredo skozi kožo v telo, pa je njihovo bistvo ravno v tem, da preprečujejo vdor snovi v telo in naredijo zaščitno plast čez.
Jaz osebno temu ne verjamem, ker če bi bilo to res, potem se ne bi to na veliko uporabljalo, tudi za občutljivo in otroško kožo. Poleg tega tu kar enoti laureth in lauryl - kar pa še zdaleč ni isto.
