Shampoo Bar Formulation Inquiry

Thank you for your question regarding the solid shampoo bar formula. Unfortunately, I cannot see the image you attached with the full formula.

However, I can provide information about the ingredients you specifically asked about: Sodium Coco-Sulfate, Sodium Lauryl Sulfoacetate, and Coco Glucoside.

Are Sodium Coco-Sulfate and Sodium Lauryl Sulfoacetate Irritating like SLS?

• SLS (Sodium Lauryl Sulfate) is known for its potential to cause irritation, especially in higher concentrations or with prolonged contact.
• Sodium Lauryl Sulfoacetate (SLSA) is a different surfactant than SLS. It is considered a mild anionic surfactant and is known to be much gentler than SLS, providing a rich, creamy foam with a soft feel.
• Sodium Coco-Sulfate (SCS) is a sulfate-based surfactant derived from the fatty acids in coconut oil. While it is a sulfate, it contains a mix of different fatty acid chain lengths, which generally makes it less irritating than pure SLS (which primarily contains C12 chain lengths). SCS is commonly used in solid shampoo bars for its excellent foaming properties.

So, while SCS is a sulfate, both SLSA and SCS are generally considered milder alternatives to SLS.

Can Coco Glucoside Substitute for Sodium Coco-Sulfate and Sodium Lauryl Sulfoacetate?

• Coco Glucoside is a very gentle, non-ionic surfactant derived from coconut oil and glucose. It is often used in gentle cleansing products and as a mild alternative to SLS in liquid formulations.
• However, Coco Glucoside provides significantly less foam compared to anionic surfactants like Sodium Coco-Sulfate and Sodium Lauryl Sulfoacetate (SLSA).
• Sodium Coco-Sulfate and SLSA are typically used as the primary surfactants in solid shampoo bars because they provide the necessary structure and create abundant lather in a solid format.

Substituting Coco Glucoside for Sodium Coco-Sulfate and Sodium Lauryl Sulfoacetate would likely result in a shampoo bar that does not lather well and may not effectively cleanse the hair, especially if they are the main surfactants in the formula. Coco Glucoside is generally not a suitable direct replacement for the primary foaming surfactants in a solid shampoo bar.

Recommendation

For the best performance of your solid shampoo bar formula, it is recommended to use the surfactants specified, namely Sodium Coco-Sulfate and Sodium Lauryl Sulfoacetate. If you cannot source these specific ingredients, you may need to look for alternative surfactant blends designed for solid shampoo bars or find a different formula that uses readily available surfactants.