top of page
  • Ameann DeJohn

Mystery Behind Blind Study – What secrets are cosmetic testing labs keeping?

Updated: Jan 15

Why are blind studies so important?


Blinding, particularly in clinical studies, is a crucial method used to minimize bias and ensure the integrity of the results. In the beauty industry, blinding is often employed in consumer perception studies and clinical trials to evaluate the efficacy of products. Blinding refers to the practice of concealing certain information from participants involved in a study, such as the brand name or specific details about the product being tested.

What is Blinding?

To “blind” a product is to strip it of all advertising labels, product information, and company details on its container. This can be accomplished in various ways, from using unbranded standardized containers to covering the entire container with concealing tape, rendering its contents a mystery.


Blinding isn't just used to keep brand identities a secret; it serves a profound purpose in clinical trials and clinical beauty product testing with the goal of eliminating any bias that could skew the trial results of the investigational product. Bias can emerge intentionally or unintentionally and may even be influenced by factors external to the clinical trial itself. Blind, in essence, serves as the guardian of impartiality, ensuring that testing results are as reliable as possible.


Types of Blinding

There are different types of blinding, each offering varying degrees of concealment.


  1. Single Blind: In a single-blind study, only the participants are kept in the dark about which treatment group they belong to either the placebo group or the investigational product group. The administrators overseeing the trial are fully aware of the treatment assignments.

  2. Double Blind: A double-blind study takes secrecy a step further. Here, both the participants and the administrators remain oblivious to the treatment group assignments. This dual layer of concealment ensures an extra level of accuracy in the results removing any and all potential bias from both the participants and administrators.


Understanding Placebos


Now that we’ve uncovered the mystery of blinding, let’s shed some light on another crucial component of clinical trials: placebos.


A placebo is essentially a “fake” product given out at random to certain participants in a study. This fake product often contains all the ingredients except the active ingredient. Its primary role is to act as a control, allowing researchers to distinguish between the actual effects of the investigational product and the physiological effects stemming from the belief that the placebo is the real deal.


What’s truly fascinating is the phenomenon known as the placebo effect. Despite being inert and devoid of any active ingredients, placebos can lead to the thought of real and tangible improvements in a participant's condition. This happens purely because the participant believes they are receiving a genuine investigational product. It’s a testament to the power of the mind over the body.


Participants in a consumer perception study experiencing the placebo effect may not exhibit objective improvements, but they report feeling better or experiencing perceived benefits. This emphasizes the complex interplay between belief, expectation, and the body’s response to treatment.


The Role of the Placebo Group

At first glance, the primary purpose of blinding may seem straightforward: to eliminate potential bias in trial results. However, there’s more to the story. Not blinding the products can have unintended consequences that go beyond skewing the data.


Placebo-Induced Participant Behavior: Suppose a participant knows from the onset that they've been assigned a placebo. In that case, they may be less motivated to adhere to the trial’s protocols and requirements. This reluctance to fully engage with the study can compromise the integrity of the control group. Without a properly functioning control group. It becomes challenging to draw meaningful comparisons.


Knowledge of True Products: On the flip side, imagine participants with the true investigational product knowing precisely what they’re receiving. This awareness can introduce external biases, such as preconceived notions about the brand or past personal experiences with similar products. Such biases can taint their self-objective assessments, making the trial’s results less reliable.


By blinding both placebos and true products, clinical trials ensure a level playing field for all participants and maintain the integrity of the research. Here’s why this approach is so crucial:


Control Group Comparisons: The placebo group serves as an essential control group against which the true investigational product group is compared. Since both groups follow the same routines, protocols, and treatment schedules, any differences in outcomes can be attributed to the investigational products' effectiveness, rather than external factors or biases.


Accurate and Reliable Results: Blinding ensures that the trial generates the most accurate and reliable results possible. Researchers can confidently assess whether the investigational product produces genuine benefits or if the observed effects are merely the result of placebo-induced expectations.


Blinding both placebos and investigational products in clinical trials is not just a measure to eliminate bias; it’s a strategic choice that safeguards the credibility and accuracy of the study’s results. By maintaining the secrecy surrounding participants’ treatment assignments, clinical trials can better evaluate the true impact of investigational products on health outcomes.



In the realm of scientific research and clinical trials, blinding and the use of placebos are essential tools for maintaining the integrity of the study results. Blinding helps neutralize biases, ensuring that the conclusions drawn from these studies are as accurate and reliable as possible. Although beauty clinical testing labs can perform double blind placebo studies it is more common to blind the study at the product testing lab in hopes that the consumer gives an honest and true assessment.


So, the next time you encounter the term “blind study” or hear about mysterious placebos, you’ll have a better understanding of their significance in the world of scientific inquiry. These practices continue to play a pivotal role in advancing our understanding of health and wellness in the scientific world.

Based in Los Angeles, Media Lab Science is a one of a kind clinical testing lab at the forefront of executing comprehensive clinical trials, as well as before and after photography and consumer perception videos in order to help brands create rock solid claims that matter to today’s consumer. Our team of acclaimed industry leaders understands how to design a testing protocol that tackles the challenges of today’s online environment to deliver data brands can use immediately.

32 views0 comments


bottom of page