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Posted: Sun 4:51, 11 Aug 2013 Post subject: hollister Petroleum Jelly Facts and Myths - Beaut |
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Fact:? Refined USP Petroleum jelly is not the same as the “Petrolatum” defined by the Chemical Abstract System (CAS) definition found in the EPA Toxic [link widoczny dla zalogowanych] Substances Control Act (TSCA) Inventory.? This CAS number (8009-03- applies to an unrefined, heavy, waxy petrolatum material. In fact, United States Pharmacopeia (USP) white petroleum jelly is not a byproduct but is a refined and purified product of heavy waxes and paraffinic oils. [link widoczny dla zalogowanych] USP White Petroleum Jelly surpasses the safety standards set by the FDA for use in food and cosmetics products as well as for both the European Union (EU) and Japanese Pharmacopeia Chemical Codes.
In layman’s term Vaseline petroleum jelly does not clog skin pores but slowly diffuses throughout the skin lipid layer and even assists the body in skin repair.
Fact: True, White USP Petroleum Jelly is an inexpensive product but on the [link widoczny dla zalogowanych] contrary it is still the most cost-effective moisturizer used today in the cosmetic industry. Petroleum jelly at minimum concentrations reduces transepidermal water loss (TEWL) by more than 98% and is followed by [link widoczny dla zalogowanych] lanolin, mineral oil, and the silicones, which are effective in the range from 20%-30%. Other substances such as beeswax, stearic acid, shea butter, jojoba oil, coconut oil, and sunflower seed oil TEWL values are below twenty percent.
Fact: There exist no credible scientific studies that prove that petroleum jelly or mineral oil is in fact comedogenic (block skin pores). In reality, the term [link widoczny dla zalogowanych] comedogenic was developed by the FDA to only classify substances that caused acne by blocking facial skin pores. Later, health and nutritional advocates attempted to extend this definition to include products used for [link widoczny dla zalogowanych] the hair and [link widoczny dla zalogowanych] body. However, the term “comedogenic” was never intended to be used beyond the original scope as defined by the FDA. [link widoczny dla zalogowanych] Recently, new scientific studies have resolved the debate. Technical papers published in the [link widoczny dla zalogowanych] Journal of Cosmetic Dermatology (May 24, 2005) and the Journal of the Society of Cosmetic Chemists (1996,?vol.?47,?pp.?41-4 demonstrated that white USP mineral oil (FG) and white USP [link widoczny dla zalogowanych] petroleum jelly (Vaseline) do not block skin pores.
Myth: Petroleum Jelly is inexpensive poor moisturizer.
Petroleum Jelly and mineral are classified as “occlusive” moisturizers. In theory, occlusives reduce water loss from the skin by creating a hydrophobic barrier when applied over the skin. Occlusive moisturizers diffuse into the intercellular lipid domains and herein lay their [link widoczny dla zalogowanych] effectiveness. Published studies show that although Vaseline exhibits what appears to be occlusive properties when applied to the skin it neither forms nor acts [link widoczny dla zalogowanych] as an impermeable barrier but rather permeates slowly throughout the SC interstices, allowing for normal skin recovery.
Myth: Petroleum Jelly (Vaseline) or mineral oil when applied to [link widoczny dla zalogowanych] the skin creates an impassible barrier plugging hair and skin pores (comedogenic).?
Myth: Petroleum jelly [link widoczny dla zalogowanych] (Vaseline) used in hair and skin products is a dangerous chemical [link widoczny dla zalogowanych] byproduct of petroleum or gasoline.
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