Clinical trials and Research Blog

Health and wellness brands are under increasing pressure to back up their claims with real evidence, not just testimonials or internal testing. At the same time, consumers care more than ever about how a product actually makes them feel, whether that is better sleep, improved digestion, or increased energy. Capturing those real-world experiences in a structured, credible way is where ePRO solutions come in. ePRO solutions (electronic Patient-Reported Outcome solutions) are di

For brands developing topical products like skincare, cosmetics, or personal care items, understanding how a formulation interacts with human skin is essential. Consumers expect products to be safe and non-irritating, and regulators expect brands to substantiate those expectations. One of the most widely used tools for evaluating skin compatibility is Repeat Insult Patch Testing (RIPT). Repeat Insult Patch Testing (RIPT) is a clinical study that evaluates whether a topical pr

If you are running a clinical study to support a product claim, one of the most important decisions you will make is choosing the primary endpoint. It shapes your protocol, your data analysis, and ultimately the claims you can confidently stand behind. This article explains what a primary endpoint is, how it works, how to choose one, and how it impacts your regulatory and marketing strategy. A primary endpoint is the main outcome a clinical study is designed to evaluate. It i

Microbiome testing is becoming a major focus for health and wellness brands, especially those in gut, skin, and immune health. But many teams are still unclear about what it actually measures and whether it is worth the investment. Microbiome testing is the analysis of microorganisms, such as bacteria and fungi, that live in a specific part of the body like the gut or skin. Brands use microbiome testing to understand how a product affects microbial balance, diversity, and com

A baseline assessment in research is the initial set of measurements collected before any intervention begins. It establishes each participant’s starting point so researchers can accurately measure change over time. For health and wellness brands, a well-designed baseline assessment is what makes your study results credible. Without it, you cannot confidently show that your product influenced outcomes rather than natural variation or outside factors. At Citruslabs, baseline a

A usability study evaluates how real people interact with a product, packaging, or digital experience to identify friction, confusion, and improvement opportunities. For health and wellness brands, a usability study helps ensure products are easy to use, instructions are clear, and the consumer experience supports safety, compliance, and trust. If your product requires instructions, measurements, device assembly, or multi-step onboarding, usability testing is not optional. It

A placebo-controlled trial is one of the most commonly referenced study designs in clinical research, especially in health, wellness, and consumer product categories. Brands often see the term used in scientific publications or competitor claims but are not always clear on what it actually involves or when it is necessary. This article explains what a placebo-controlled trial is, how it works, and when this type of study makes sense for brands looking to generate credible, tr

Attrition bias is one of the most common and least understood sources of error in clinical and consumer research. It shows up when participants drop out of a study and those dropouts are not random. For brands relying on study data to guide decisions, this can quietly undermine confidence, credibility, and trust. This article explains what attrition bias is, why it matters, how it happens, and what brands can do to reduce its impact when running human studies. Attrition bias

When brands talk about being clinically tested, the type of study behind that claim matters. One commonly used and often misunderstood research design is the open label study. Especially popular in supplements, skincare, cosmetics, superfoods, and pet health, an open label study offers valuable real-world insights, when designed and communicated correctly. In this post, we’ll break down what an open label study is, how it works, its benefits and limitations, and why it plays

You’ve poured months, maybe years, into developing a product you believe in, whether it’s a glow-boosting serum, a gut health supplement, or a mobility chew for senior dogs. Now comes the hard part: proving it works. In a crowded market full of unverified claims, one of the most powerful ways to stand out is through clinical evidence. That’s where the parallel group study comes in, a trusted research design that gives brands the data they need to validate product claims and w

Clinical trials are the gold standard for validating the safety and efficacy of skincare products and dietary supplements. Within this landscape, the crossover study design stands out for its unique ability to minimize variability and optimize study efficiency. In this blog post, we’ll explore what a crossover study is, how it works, and why it's particularly valuable for brands in the skincare and supplement industries. What is a Crossover Study? A crossover study is a type

In the evolving landscape of wellness and functional health, prevention trials are becoming a vital piece of the puzzle. Unlike treatment trials, which assess how a product alleviates existing symptoms, prevention trials aim to answer a more proactive question: Can this product reduce the risk of a condition ever occurring? Whether you’re marketing supplements, skincare products, superfoods, or pet health formulas, prevention trials offer a scientifically grounded path to pro

Before you ever recruit a participant or collect a data point, there’s one critical step that sets your clinical trial up for success:...

If you're looking to elevate your brand with credible, research-backed product claims, the secret weapon is a smart clinical study...

Clinical trials in 2025 look dramatically different from just a few years ago, but many of the underlying challenges are still present....

When you see the phrase "clinically tested" on your favorite skincare serum or dietary supplement, there's a team of experts behind that...

In the evolving wellness and beauty market, product quality assurance is no longer optional, it's essential. For brands in sectors like...

If you’re a wellness brand looking to validate your product’s benefits, you’ve probably come across various types of clinical trials. One...

Imagine launching a breakthrough skincare serum or a revolutionary pet supplement, only to find that consumers, retailers, and even...

When brands boast “clinically proven” on their labels, what’s behind that claim? It’s not just clever marketing, it’s science. And at the...