The Inkey List Exosome Hydro-Glow Complex Scientifically Impossible to Work, Class Action Lawsuit Claims

A proposed class action lawsuit filed on June 16, 2026, in California federal court claims that beauty and skincare manufacturer Brand Evangelists for Beauty Inc. falsely advertises its Exosome Hydro-Glow Complex serum, asserting that the product’s promised clinical results are “scientifically impossible” to achieve through a standard, over-the-counter topical serum.

What Are the False Advertising Claims Against The Inkey List?

The lawsuit, Selby et al. v. Brand Evangelists for Beauty Inc., takes direct aim at the key marketing claims printed on the packaging and featured online for the Exosome Hydro-Glow Complex. According to the 26-page complaint, the defendant uses precise, scientific-sounding percentages to convince everyday people that the product will dramatically transform their skin.

Specifically, the lawsuit alleges that the brand advertises that its plant-derived exosomes “help boost collagen production by 300%,” “reduce inflammation by 55%,” and “improve skin repair by 63% in eight hours.” The company also claims the serum provides “up to 12 hours of hydration” and delivers “clinically proven” skin rejuvenation in just 14 days.

However, the plaintiffs allege that these clinical milestones are impossible to reach under normal, everyday usage. The lawsuit claims that the scientific reality of how topical cosmetics interact with the human body completely refutes the brand’s marketing.

Why Do Plaintiffs Claim the Serum Cannot Penetrate the Skin?

At the center of the legal dispute is how exosomes actually function in skincare. Exosomes are tiny, bubble-like nanovesicles that carry active biological materials, such as proteins, lipids, and RNA. The lawsuit notes that exosomes first became popular in clinical dermatology settings as a follow-up treatment to invasive procedures like microneedling or fractional laser therapy.

During professional clinical treatments, microscopic channels are deliberately punctured into the skin. When exosomes are applied afterward, they can easily slip through these physical openings to help heal and repair the tissue.

However, the lawsuit points out that when everyday consumers apply a topical serum at home, their skin barrier is completely intact. The outer layer of human skin, known as the epidermis, is specifically designed to keep foreign materials out. Without a professional laser or microneedling procedure to breach this barrier, the plant-based exosomes in the Hydro-Glow Complex are simply too large to penetrate the skin.

The Molecular Size and Temperature Problems Exposed in the Lawsuit

To illustrate why the serum supposedly fails to work, the lawsuit highlights a major size discrepancy in plant-based exosomes. According to scientific studies referenced in the filing, mammalian-derived exosomes smaller than 50 nanometers (nm) struggle to penetrate an intact skin barrier, with only one to 10 percent of the dose successfully passing through.

Plant-derived exosomes, such as the ones used by The Inkey List, are significantly larger. The lawsuit notes that these plant-based particles range from 50 nm at their absolute smallest to upwards of 500 nm in diameter. Because they are so large, the vast majority of the active exosomes in the serum remain trapped on the surface of your skin, unable to reach the deeper layers where collagen is produced.

Beyond the physical size barrier, the lawsuit highlights a critical storage issue. The complaint cites scientific literature showing that plant-based exosomes are highly temperature-sensitive and must be stored at a freezing temperature of -80 degrees Celsius (-112 degrees Fahrenheit) to remain active and effective.

Because the manufacturer does not ship the product in specialized cold storage or instruct consumers to store it in ultra-low freezers, the lawsuit argues that the active ingredients likely break down and lose their effectiveness long before a consumer ever applies the serum to their face.

Which Consumers Are Affected by This Skincare Lawsuit?

If you bought this product to improve your skincare routine, you may be wondering if your purchase is covered by this legal action. The proposed lawsuit seeks to represent and protect a class of everyday people nationwide who purchased the product, with a specific focus on those covered under California’s robust consumer protection laws.

You may be eligible to participate in this class action if you purchased The Inkey List Exosome Hydro-Glow Complex through:

• The official brand website (TheInkeyList.com)

• Amazon.com

• Other authorized third-party retail channels during the applicable statute of limitations period.

The lawsuit asserts violations of several state laws, including the California Consumers Legal Remedies Act, the False Advertising Law, and the Unfair Competition Law. These consumer protection statutes are designed to hold companies accountable when they make biological or clinical claims that cannot be substantiated by science.