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How to Recognize a Quality Solid Shampoo

Handso Team

Jan 7, 2025

Solid cosmetics are no longer a novelty and can be an excellent choice for those seeking a more eco-friendly lifestyle. 

However, not all solid shampoos are created equal, and it’s easy to mistake them for simple soap bars. Here are some tips to distinguish a high-quality solid shampoo from a fake.

Mistakes to Avoid

You’ll often come across products labeled as "solid shampoo" that are nothing more than soap bars. These products might look appealing with their cute shapes and vibrant colors, but they’re not suitable for hair care. Using a soap bar instead of a solid shampoo can lead to dry, tangled hair and scalp irritation.

Key Ingredients of a Quality Solid Shampoo

A true solid shampoo is formulated with surfactants and active ingredients specifically designed for hair. It’s crucial for the product to have an acidic pH, similar to that of our scalp (around 5.5/6.0). An alkaline pH, typical of soap bars, can damage hair, leaving it dull and brittle. With a quality solid shampoo, there’s no need for an acidic rinse after washing.

What is pH and Why Does It Matter?

pH measures the acidity or alkalinity of a substance. A pH below 7 is acidic, while a pH above 7 is alkaline (basic). Our scalp has a naturally acidic pH, so it’s essential for a shampoo to maintain this balance to keep hair healthy and shiny.

Effects of the Wrong pH on Hair

Think of your hair as a pinecone. When the shampoo’s pH is below 7, the "scales" of the pinecone close, leaving hair smooth, shiny, and manageable. However, when the pH exceeds 7 (common in solid soaps, which typically have a pH of 8.0/8.5), the scales open, making hair appear dull and prone to tangling, creating that "bird’s nest" effect.

How to Spot a Fake Solid Shampoo

To identify a fake solid shampoo, carefully read the ingredient list (INCI) on the label. If you see ingredients like Sodium Hydroxide (Caustic Soda) combined with oils or butters, or terms like Sodium Palmate or Sodium Cocoate, it’s likely a soap bar and not a genuine solid shampoo.

Conclusion

Choosing a high-quality solid shampoo not only helps reduce environmental impact but also ensures proper hair care. Always check the ingredients and make sure the product is specifically formulated for use on hair. With these simple tips, you can avoid being “soaped up” by fake solid shampoos and enjoy the benefits of a true solid shampoo.