Name: Sodium Lauroyl Sarcosinate
Brand: Alchemme
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Sodium Lauroyl Sarcosinate is a mild anionic surfactant that is commonly used in personal care and cosmetic products. It is derived from sarcosine, an amino acid naturally found in certain proteins. This surfactant is known for its gentle cleansing properties and is often used in products designed for sensitive skin and hair. Here are some key aspects of Sodium Lauroyl Sarcosinate:

Sodium Lauroyl Sarcosinate can be found in various personal care products such as facial cleansers, body washes, shampoos, toothpaste, and shaving creams. Its ability to provide effective yet gentle cleansing makes it a valuable ingredient, particularly for products targeted at individuals with sensitive skin or those seeking milder formulations.

Cleansing: Sodium Lauroyl Sarcosinate is used primarily for its cleansing abilities. It effectively removes dirt, oils, and impurities from the skin and hair without causing excessive dryness or irritation. Its mild nature makes it suitable for individuals with sensitive skin or scalp.

Mildness: This surfactant is considered relatively gentle compared to some other harsher surfactants like Sodium Lauryl Sulfate (SLS) or Sodium Laureth Sulfate (SLES). It produces a moderate amount of lather while still providing effective cleaning.

pH Stability: Sodium Lauroyl Sarcosinate is stable over a range of pH levels, which makes it compatible with a variety of cosmetic formulations.

Foaming: While not as high foaming as some other surfactants, it contributes to the foaming properties of products, helping create a satisfying cleansing experience.

Rinsability: The surfactant is easily rinsed off the skin and hair, leaving them feeling clean and refreshed.

Compatibility: It works well with other surfactants and ingredients typically used in personal care products, allowing formulators to create well-balanced formulations.

Reduced Irritation: Sodium Lauroyl Sarcosinate can have a milder effect on the skin's natural barrier compared to stronger surfactants, reducing the likelihood of irritation.

Mild Surfactant: Sodium Lauroyl Sarcosinate is known for being a mild surfactant, making it ideal for formulations intended for sensitive skin or daily use. It’s often used in facial cleansers, shampoos, and body washes where gentleness is key.

Use as a Primary or Secondary Surfactant: This ingredient can be used both as a primary surfactant for mild cleansing products or as a secondary surfactant to reduce the irritation potential of other surfactants like Sodium Lauryl Sulphate (SLS) or Sodium Laureth Sulphate (SLES).

Foaming Properties: It produces a creamy, stable foam. While not as foamy as SLS, it still provides a pleasant lather. Consider combining it with other surfactants like Cocamidopropyl Betaine to enhance foaming while maintaining mildness.

Formulation pH: Sodium Lauroyl Sarcosinate is stable across a wide pH range (4-7.5). Ensure your formulation falls within this range to maintain the stability and effectiveness of the surfactant.

Compatibility: This surfactant is compatible with a wide range of cosmetic ingredients, including other surfactants, conditioning agents, and active ingredients. It works well in sulfate-free formulations.

Avoid Overheating: Like many surfactants, Sodium Lauroyl Sarcosinate should not be overheated during formulation. Add it to the water phase at a controlled temperature, preferably below 50°C (122°F), to prevent degradation.

Concentration Levels: Typical usage concentrations range from 2% to 10% depending on the product type. Higher concentrations are often used in rinse-off products like shampoos, while lower concentrations may be used in more sensitive applications.

Moisturising Effects: Sodium Lauroyl Sarcosinate has some conditioning properties, making it suitable for formulations that require a balance between cleansing and moisturising, such as in 2-in-1 shampoo and conditioners or hydrating facial cleansers.

Clear Formulations: It is suitable for clear or transparent formulations, so if you’re formulating a clear shampoo or facial wash, Sodium Lauroyl Sarcosinate can help maintain clarity.

Boosting Mildness: For extra mild formulations, consider combining Sodium Lauroyl Sarcosinate with other sarcosinates or amino acid-based surfactants. This can further reduce potential irritation and enhance the overall feel of the product.

Viscosity Adjustments: It has a low impact on the viscosity of formulations, so you may need to use thickeners or other viscosity modifiers if a thicker product consistency is desired.

Eco-friendly Choice: Sodium Lauroyl Sarcosinate is biodegradable and considered eco-friendly, making it a good choice for natural or environmentally conscious brands.

Chemical Name: Sodium Lauroyl Sarcosinate

CAS Number: 137-16-6

Molecular Formula: C15H28NNaO3

Molecular Weight: Approximately 293.38 g/mol

Appearance: Clear to slightly hazy liquid or solid (may vary depending on the form)

Solubility: Soluble in water.

pH (1% Aqueous Solution): Typically in the range of 7.0 - 9.0.

Odour: Characteristic or mild odour.

Usage: Sodium Lauroyl Sarcosinate is widely used as a surfactant in personal care products, such as shampoos, cleansers, and body washes. It provides mild cleansing and foaming properties and is known for its compatibility with sensitive skin.

Stability: Stable under normal storage conditions. However, it is important to consider the compatibility of Sodium Lauroyl Sarcosinate with other ingredients in formulations to ensure stability.

Compatibility: Generally compatible with anionic, nonionic, and amphoteric surfactants. It can be used in combination with other surfactants to enhance performance.

Biodegradability: Sodium Lauroyl Sarcosinate is considered biodegradable, which is an environmentally friendly characteristic.