What Shampoo Brand Is Being Sued for Hair Loss?

WrittenbyLuat Duong
Last updated

Hair loss is a sensitive issue that can significantly impact an individual's self-confidence and overall well-being. While there are numerous potential causes of hair loss, concerns have arisen when certain shampoo brands are alleged to contribute to this issue, leading to legal action from affected consumers.

What Shampoo Brand Is Being Sued for Hair Loss?

One of the most notable shampoo brands facing lawsuits related to hair loss is Wen by Chaz Dean. Since 2014, the brand has been embroiled in multiple class-action lawsuits alleging that their popular cleansing conditioners have caused significant hair loss, scalp irritation, and other hair-related issues for many users.

Wen by Chaz Dean Lawsuits

The lawsuits against Wen by Chaz Dean allege that the brand's signature cleansing conditioners, which were marketed as a gentle and nourishing alternative to traditional shampoos, caused users to experience excessive shedding, hair breakage, and in some cases, complete hair loss.

Plaintiffs claimed that the products contained harsh ingredients that damaged hair follicles, leading to thinning and bald spots, despite the brand's claims of being suitable for all hair types.

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Other Brands Facing Scrutiny


In 2019, L'Oréal faced a class-action lawsuit alleging that some of their hair care products, including the Kérastase and Redken brands, caused hair loss and scalp irritation due to the presence of potentially harmful ingredients like DMDM hydantoin and drying alcohols.

WEN Hair Care

While not directly related to Wen by Chaz Dean, another brand named WEN Hair Care has also faced legal action over claims that their shampoos and conditioners caused hair loss and scalp irritation for some users.

Potential Causes of Hair Loss from Shampoos

Harsh Ingredients

Many lawsuits allege that certain shampoos contain harsh ingredients, such as sulfates, parabens, or formaldehyde-releasing agents, which can strip the hair and scalp of natural oils, leading to dryness, irritation, and potential hair loss or thinning.

Allergic Reactions

Some individuals may experience allergic reactions or sensitivities to specific ingredients found in certain shampoo formulations, which can cause scalp irritation, inflammation, and ultimately lead to hair loss or thinning.

Improper Use or Overuse

Using shampoos incorrectly, such as leaving them on the hair for too long or using excessive amounts, can potentially contribute to hair damage and loss, even if the formulation itself is not inherently problematic.

Consumer Awareness and Precautions

Read Ingredient Labels Carefully

To minimize the risk of hair loss or scalp irritation, it's crucial for consumers to carefully read and understand the ingredient lists on shampoo bottles, avoiding products with potentially harmful or irritating components.

Perform Patch Tests

Before using a new shampoo, especially if you have a history of allergies or sensitivities, it's recommended to perform a patch test on a small area of skin to check for any adverse reactions.

Seek Professional Advice

If you experience excessive hair loss, scalp irritation, or other concerning symptoms after using a particular shampoo, it's advisable to consult with a dermatologist or trichologist to identify the root cause and explore appropriate treatment options.


While lawsuits against shampoo brands like Wen by Chaz Dean, L'Oréal, and WEN Hair Care have raised awareness about the potential link between certain shampoo formulations and hair loss, it's important to approach these claims critically and consider individual circumstances.

Consumers are encouraged to be vigilant in reading ingredient labels, performing patch tests, and seeking professional advice if they experience adverse reactions or hair loss after using a particular shampoo brand. Ultimately, maintaining a healthy scalp and taking precautions can help mitigate the risk of shampoo-related hair loss.

Why Consider Scandinavian Biolabs Hair Strength Shampoo?

Focus on Strength, Not Just Speed:

While the Scandinavian Biolabs Hair Strength Shampoo won't miraculously accelerate growth overnight, it addresses the root cause of slow growth: a weak scalp environment.

Gentle Yet Effective:

This shampoo is formulated with naturally-derived ingredients to cleanse without stripping your hair. It helps balance your scalp's sebum production for a healthy foundation for hair growth.

Stronger, More Vibrant Hair:

By creating an optimal scalp environment, this shampoo promotes stronger, healthier hair that's less prone to hair thinning. This can indirectly contribute to the appearance of faster growth, as there's less hair loss.

Target the Right Product:

This shampoo focuses on strengthening hair and creating a healthy scalp for hair growth. If your primary concern is hair loss, Scandinavian Biolabs also offers a Bio-Pilixin® Activation Serum specifically designed to address that.

Hair Strength Shampoo | For Men
Hair Strength Shampoo | For Men
Aims to cleanse gently while helping to reduce excess oil and balance scalp
Hair Strength Shampoo | For Women
Hair Strength Shampoo | For Women
Aims to cleanse gently while helping to reduce excess oil and balance scalp

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Luat Duong

Luat Duong is a Copenhagen-based writer and content strategist specializing in hair loss and health. His work has been featured in MyHealthGuide, The Right Hairstyles, and Woman's Era. He is a graduate of Vaasa University. You can connect with him on LinkedIn.