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Peg Analysis in Cosmetics

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  • Peg Analysis in Cosmetics

PEGs, also known as Polyethylene Glycol, are synthetic chemical compounds frequently used in cosmetics and personal care products. Ethylene oxide and 1,4 dioxane can be used in the production of PEGs. PEG is used as a solvent, thickener, softener and moisture carrier in cosmetics and personal care products.

Peg Analysis in Cosmetics

PEGs are often referred to as PEG-7 or PEG-80. These numbers indicate how many units of ethylene glycol are in the product. The lower the number, the more easily the skin absorbs it. PEGs usually contain ethylene oxide and 1,4 dioxane. Ethylene oxide is a carcinogen. It can inhibit development in the human body and damage the nervous system. 1,4 dioxane has a carcinogenic risk and is an environmental toxin.

If consumers want to avoid these risks, they should prefer PEG-free products. To do this, they should read labels carefully and avoid cosmetic products with PEG. The first and important product assessment of consumers is to read the labels of the products.

What is Polyethylene Glycol (PEG)?

Polyethylene glycol (PEG) is a polymeric compound. Its chemical formula is (C₂H₄O). It stands out as a substance used in many industrial and cosmetic applications. This chemical contains a series of polyethylene glycols created by combining many molecules of ethylene oxide units. Various types of PEGs with different molecular weights can be produced depending on the number of these units. PEG can be colorless, odorless and water-soluble liquid or white solid.

It has been concluded that the use of polyethylene glycols in cosmetics is safe if they are formulated with non-irritating mixtures with cocamine and related ingredients. The lower the amount of ethylene oxide contained in PEG, the more easily it is absorbed by human skin.

PEGs Have Moisturizing Properties

PEGs are used as humectants in skin care products. They are very good at providing moisture to the skin becaıse they can mix well with water.


PEGs are used as emulsifiers in cosmetic products due to their ability to hold different ingredients, such as oil and water, together. Use as an emulsifier increases the stability of products such as creams, lotions and makeup.

Active Ingredient Carrier:

PEG can be a carrier of active ingredients used to increase absorption through the skin or penetrate the skin barrier.

What is Polyethylene Glycol Analysis?

Polyethylene glycol analysis is a laboratory method used to determine different types and molecular weights of PEG. PEG analysis is very important in the cosmetic industry for the following reasons:

Analyzes confirm product quality and safety by verifying the types and amounts of PEG used in products.

They prevent discrepancies between the PEG content on product labels and the actual content and provide accurate information to the consumer.

Analyzes help optimize the skin tolerance of products, taking into account that PEG species with different molecular weights may have different effects on the skin.

Harms of PEGs

Polyethylene glycol is a common ingredient found in many cosmetic products. However, PEGs may cause potential harm.

PEGs may cause skin irritation in some people. Such reactions may be more common, especially in people with sensitive skin or those whose skin barrier is already weak. Redness, itching or burning are the most common symptoms of this harm.

Although PEG is a commonly found ingredient in cosmetic products, it is a potential hazard that can cause skin irritation in some people.

PEGs have a molecular structure containing lipophilic and hydrophilic areas. This makes PEGs easily spread across the skin surface. However, some types of PEG can dissolve the natural lipid barrier in the skin. This barrier of the skin prevents the penetration of external factors into the skin. The ability of PEGs to dissolve this barrier can lead to skin dehydration and sensitivity.

PEGs have different molecular weights and structural features. These differences may include potentially allergenic PEG species that may cause allergic reactions in some people. They  can cause the growth of microorganisms because they have a structure that is well miscible with water. PEGs in cosmetic products may increase the risk of microbial contamination of the products. This contamination can lead to the growth of bacteria or fungi that can cause skin irritation.

People's skin types and skin reactions are different. Therefore, PEGs may cause skin irritation in some people but not cause any reaction in others. Therefore, individual skin types and reactions should not be ignored.

There are many reactions that PEGs can cause skin irritation, such as weakening the skin barrier, carrying allergenic potential, causing product contamination, and causing individual skin reactions. Consumers with skin sensitivities should check product labels before using cosmetic products containing PEG.

PEGs may contain potential allergens that can cause allergic reactions. Some people may have allergic reactions to these chemicals because PEGs have a variety of molecular weights and structures. These reactions may include skin rashes, hives, or swelling.

PEG species with large molecular weights may cause some health problems. However, PEGs with low molecular weights are often used in cosmetic products and therefore have a low risk of toxicity.

The production and use of PEGs also has environmental impacts. The use of various chemicals during production processes and their release into the environment may cause environmental concerns.

PEG analyzes are very important for both the safety of your customers and the reliability of your brand. Many consumers of cosmetic products know very well that these products contain harmful ingredients. However, the number of people who have accurate information about these products is low. Therefore, cosmetic product manufacturers are responsible for providing accurate information to their customers on these issues. This correct information is learned based on professional analysis results.

Contact us to get more information about PEG Analysis.

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