What Is Pareth 15?

Learn about the surfactant cleansing and surfactant emulsifying characteristics of Pareth 15 and its usage in personal care products.

What Is Pareth 15? Brandon Jones / IngredientReviewer

Last Updated: October 2, 2024

Written by Brandon Jones

What Is Pareth 15?

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Nonoxinol is a type of chemical that can be used in cosmetics to help clean and mix ingredients together. It is a yellow liquid with a mild smell, and can slowly mix with water. Nonoxinol is made up of different chemicals that are used in detergents, soaps, and other cleaning products. It has many names like 2-(4-nonylphenoxy)ethanol or 4-nonyl phenol monoethoxylate.

What is the purpose of Pareth 15 in personal care products? It is used for its surfactant cleansing and surfactant emulsifying characteristics. Pareth 15 helps clean body surfaces and helps mix liquids that don't usually mix.

Names and identifiers that we found for this substance include: Pareth 15, Nonoxinol, Tergitol 15S9, C11-15-Secondary alcohols ethoxylated, SS70, 15S5, and 35S7.

What Are Surfactant Cleansing Ingredients?

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Pareth 15 has surfactant cleansing characteristics.

Surfactant cleansing ingredients are commonly found in various cosmetics, particularly those designed for cleansing, such as shampoo, body wash, and facial cleansers. These ingredients serve several purposes, including wetting body surfaces, emulsifying or dissolving oils, and suspending dirt and grime, making them easier to remove. Surfactants generally contribute to the foaming and lathering properties of cleansing products, making them more effective in removing impurities from the skin or hair.

What Are Surfactant Emulsifying Ingredients?

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Pareth 15 has surfactant emulsifying characteristics.

Surfactant emulsifying ingredients helps mix two liquids that do not usually mix well by reducing the surface tension of the ingredients. The emulsification process involves suspending or dispersing one liquid in a second liquid, such as oil in water or vice versa. However, these two liquids have different properties that cause them to repel each other and not mix. This is where surfactants come in, as they can reduce the liquids' surface tension and allow them to mix.

Surfactants have two ends: a hydrophilic (water-loving) head and a hydrophobic (water-repelling) tail. When added to two liquids that do not mix well, the hydrophilic head attaches to the water-based liquid, while the hydrophobic tail attaches to the oil-based liquid. This creates a stable mixture of the two liquids and allows for a smooth and even distribution of ingredients in the cosmetic product.

Safety

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Remember, always read and follow the instructions provided on product labels carefully. If you have any questions or concerns about using a product containing various ingredients, consult with your doctor or healthcare provider before use.