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You must have JavaScript enabled in your browser to utilize the functionality of this website. Stearyl alcohol is a natural fatty alcohol that is used as an emollient, em... What Is Acetyl Glucosamine? The Science (video with KindofStephen), Tranexamic acid: a newer skincare ingredient for pigmentation, « Activated Charcoal in Skincare: The Science, Gift Ideas for a Good Cause From The Body Shop », Purging vs Breakouts: When to Ditch Your Skincare, Easy (5 Minute) DIY Vitamin C Serum Recipe, My Routine for Starting on Tretinoin (Retin-A) Cream. I understand if you are concerned about using such an ingredient in your skincare but sodium hydroxide has a little hidden talent. This is why knowledgable formulators are so important.

The United States Food and Drug Administration has approved sodium hydroxide as GRAS (Generally Recognized as Safe) as a direct food additive. If it’s lower than 7 it’s acidic, and if it’s higher than 7 it’s basic. In most cases, the sodium hydroxide is not present in the final product. Pain and irritation are evident within 3 minutes, but contact with dilute solutions may not cause symptoms for several hours. Dermal contact with sodium hydroxide can take several different forms depending on the strength of the solution. The pH scale ranges from 0 to 14. References: Sodium hydroxide is approved for use in cosmetics and personal care products in varying concentrations: 5% by weight in nail cuticle solvents, 2% by weight in hair straighteners for general use, 4.5% by weight in hair straighteners for professional use, up to a pH 12.7 in depilatories, and up to pH 11 in other uses as a pH adjuster. A pH of 7 is neutral. The skin’s normal pH is slightly acidic, typically between 4.5 and 5.75. Log in. Cosmetic Ingredient Review, 2015. Concentrated sodium hydroxide is a strong irritant and corrosive to the skin, eyes, respiratory tract, and gastrointestinal system if ingested. Cosmetic Ingredient Review, 2015.



Although Sodium Hydroxide has been linked to cancer, specifically of the esophagus, the CDC found that these cases were after 15 - 40 years of exposure, and were caused by corrosion induced by Sodium Hydroxide and "were most likely the result of tissue destruction and scar formation rather than a direct carcinogenic action of sodium hydroxide itself." * Also known as lye, caustic soda, soda lye or sodium hydrate. Acetyl glucosamine is a skin-replenishing ingredient that helps to reduc... What Is Acetyl Hexapeptide 8? However, it is primarily used in the washing and chemical peeling of produce. It is also a popular ingredient in industrial solvents as a chemical base for soaps, oven cleaners, detergents and drain cleaners because of its ability to dissolve grease, oils, fats and protein based deposits, according to Wikipedia. * A pH adjuster the not so good:Sodium hydroxide is highly caustic but it is usually fully used up in the process. No part of this blog may be reproduced or transmitted in any form or by any means without written permission from the author, except for brief quotations when accompanied by a citation and link.

Less frequently, Sodium Hydroxide is seen as an ingredient in toothpastes. ALL RIGHTS RESERVED. It is approved for use in cosmetics and personal care products in varying concentrations: 5% by weight in nail cuticle solvents, 2% by weight in hair straighteners for general use, 4.5% by weight in hair straighteners for professional use, up to a pH 12.7 in depilatories, and up to pH 11 in other uses as a pH adjuster. If you are familiar with lye you made have heard some scary things. Solutions of 25 to 50 percent concentration will produce an immediate burn.

In cases where it is, the pH is usually carefully managed so as to not disrupt the skin.

It is good to keep in mind that sodium hydroxide is a versatile ingredient. Sodium Hydroxide is FDA approved, and has received the GRAS (Generally Recognized as Safe) rating as a direct food additive. TO LEARN MORE ABOUT THE DETAILS OF THESE RELATIONSHIPS AND HOW PRODUCTS ARE RANKED ON OUR SITE, PLEASE READ THE "FULL DISCLOSURE" AND "METHODOLOGY" SECTIONS.

In chemistry, pH stands for ‘potential hydrogen’ and it refers to the level of acidity or alkalinity in a given solution. It was historically used in the formulation of soaps, but is currently seen in a variety of formulas, including bath products, cleansing products, fragrances, foot powders, hair dyes and colors, makeup, nail products, personal cleanliness products, shampoos, shaving products, depilatories, skin care products, and suntan products, as well as chemical hair straighteners and hair wave sets (CosmeticsInfo.org and CosmeticsCop.com). Your email address will not be published. Lower pH means a higher concentration of H, The formula for calculating pH is pH = -log. * Considered a strong irritant In addition to its presence in cosmetics and personal care products, sodium hydroxide is used in many different industries, for instance, in the manufacture of pulp and paper, textiles, drinking water, soaps and detergents, and as a drain cleaner. The CDC reports that "Skin contact with sodium hydroxide can cause severe burns with deep ulcerations. Most dermatologists don’t recommend alkaline cleanser despite their growing popularity.

Contact with the eye may produce pain and irritation, and in severe cases, clouding of the eye and blindness." ‘Safety Assessment of Inorganic Hydroxides as Used in Cosmetics, Cosmetic Ingredient Review Expert Panel. Everything You Need to Know about Hyaluronic Acid. Helpful how-tos and reviews from Marta and friends.

Studies by the National Institute for Occupation Safety and Health found that this ingredient causes "Irritation eyes, skin, mucous membrane; pneumonitis; eye, skin burns; temporary loss of hair" and recommends that consumers prevent skin and eye contact. It is classified as "expected to be toxic or harmful" and one or more animal studies show brain and nervous system, metabolic, and sense organ effects at very low doses and there are warnings regarding using this ingredient around the eyes or mouth. The CDC reports that “Skin contact with sodium hydroxide can cause severe burns with deep ulcerations. What Are Parabens – And Are They Bad For You?

And the damage is cumulative: the longer you use it, the more damage it does to your skin.

The severity of effects caused by sodium hydroxide is a function of the concentration, the pH, the length of tissue contact time, and local conditions and skin type. EXCLUDING INTELLECTUAL PROPERTY OWNED BY OTHERS, ALL SITE CONTENT IS COPYRIGHTED OR LICENSED FOR USE BY THE OWNER OF THIS SITE.

The CDC reports that "Skin contact with sodium hydroxide can cause severe burns with deep ulcerations. Those of lesser concentrations could take as long as several hours before a burn occurs. Acute Exposure.

Sodium hydroxide is a highly alkaline ingredient that is used in small amounts in cosmetics and skincare products to establish and hold the pH of a product. JavaScript seems to be disabled in your browser. Pain and irritation are evident within 3 minutes, but contact with dilute solutions may not cause symptoms for several hours. On one hand, if a product is too acidic it may irritate the skin or cause a stinging sensation. On the other hand, a product that is too alkaline is detrimental because it depletes your skin of vital, natural fats or lipids. Safety Measures/Side Effects of Sodium Hydroxide: Sodium Hydroxide is considered a moderate hazard ingredient by the Cosmetics Database, which notes concerns regarding cancer, and moderate concerns regarding neurotoxicty, organ system toxicity and irritation. THIS SITE IS FOR INFORMATIONAL PURPOSES ONLY AND SHOULD NOT BE USED AS A SUBSTITUTE FOR ADVICE OR TREATMENT FROM A QUALIFIED MEDICAL PROFESSIONAL. Sodium hydroxide is used to saponify oils, meaning that it allows oils to lather and foam in soaps and cleansers. It is also a popular ingredient in industrial solvents as a chemical base for soaps, oven cleaners, detergents and drain cleaners because of its ability to dissolve grease, oils, fats and protein based deposits, according to Wikipedia. Even though typical formulations only use a small amount of sodium hydroxide in order to adjust the pH, which is usually used up in the chemical reaction, if a product is too alkaline it can damage your skin. Recommended Products with Sodium Hydroxide: E'shee Clinical Esthetic Alpha and Omega Gene Therapy Eye Cream ($284 in the shop), Sciote Peptide+Defense Firming Eye Creme ($65 in the shop), Kat Burki Hibiscus Antioxidant Face Mask ($78 in the shop), Skinfinite Platinum 30spf ($32.50).

However, it is primarily used in the washing and chemical peeling of produce.

Synergetic ingredients:Works well with most ingredients. Sodium Hydroxide is an inorganic compound used to control the pH levels or serve as a buffering agent in cosmetics and personal care products. However, it is primarily used in the washing and chemical peeling of produce. This acidity of the skin is termed the skin’s ‘acid mantle’ and is maintained by sebaceous glands, sweat glands, and normal skin flora. Other studies acknowledge Sodium Hydroxide as a strong irritant that is corrosive to the skin, eyes, and respiratory tract, but that the severity of the effects are related directly to concentration and pH levels, as well as the length of exposure and skin type. Pain and irritation are evident within 3 minutes, but contact with dilute solutions may not cause symptoms for several hours. the good:Soaponifies oils so that they can be used in soaps and cleansers.

The science, How Bad Is Alcohol in Skincare, Really? Earn Rewards, get samples, Sign up and SAVE today, National Institute for Occupation Safety and Health, E'shee Clinical Esthetic Alpha and Omega Gene Therapy Eye Cream, Reader Review: Another Take on My Blend Day Creme. Sodium hydroxide was historically used in the formulation of soaps but is also found in a variety of formulas, including bath products, cleansing products, fragrances, foot powders, hair dyes and colors, makeup, nail products, personal cleanliness products, shampoos, shaving products, depilatories, skincare products. It was historically used in the formulation of soaps, but is currently seen in a variety of formulas, including bath products, cleansing products, fragrances, foot powders, hair dyes and colors, makeup, nail products, personal cleanliness products, shampoos, shaving products, depilatories, skin care products, and suntan products, as well as chemical hair straighteners and hair wave sets (CosmeticsInfo.org and CosmeticsCop.com).

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