Tolerance Level (old)

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In any skin-related study, it is crucial to detect and moderate tolerance levels of the volunteers’ skin. Even if the product shows superb positive benefits in terms of the primary target goal (improving signs of aging in this study), consumers will face additional side effects if the resulting product is intolerable. These side effects are often too severe and can result in the stoppage of the product usage. This is why evaluating a product’s tolerance levels is of crucial importance. Throughout the 28-day study, volunteers were closely monitored and their skin tolerance levels were checked regularly. No signs of irritation, redness, inflammation or sensitivity were recorded. This can be counter-checked using the table above where mean values for all columns have come out to be 1. Clearly, the Dr Kinsella CBD Facial Serum is a safe product to be used on human skin.

Subjective Evaluation by Volunteers

While scientific measurement and assessment of a product is the cornerstone of any skincare study, we also wanted to receive feedback from the volunteers and determine how they liked using the product over the course of 28 days. We decided on conducting a subjective evaluation – asking volunteers their experiences in a scenario where there are no wrong or right answers. The aim of doing so was not to just evaluate the antiwrinkle, hydration, moisturization, even skin tone and tolerance levels of the Dr Kinsella CBD Facial Serum; but to also gauge the product’s acceptability and potential future use by the volunteers. This subjective evaluation also helped us generalize our findings for the public.

One simple question was asked to summarize the entire study –
‘In a general way, how do you evaluate the test product?’. The answers to this question had five simple options – very good, good, fair, bad and very bad. The responses received were gratifying. Thirty-Five % of the volunteers rated the Dr Kinsella CBD Facial Serum as ‘very good’. Other than this, 55% of volunteers rated the facial serum as ‘good’ and 10% rated it as ‘fair’. No responses for ‘bad’ and ‘very bad’ were received. This indicates a solid acceptability of the facial serum and shows signs of future usage by the volunteers.


In Summary: The four key areas of findings were – wrinkle reduction, even skin tone and depigmentation, moisturization and hydration and better skin tolerance. 


  1. Wrinkle Reduction
    The primary goal of this study was to ascertain the potency of the Dr Kinsella CBD Facial Serum in reducing the appearance of wrinkles. Post the 28 days course of facial serum application, 90% and 95% of the subjects considered that the appearance of their fine lines and wrinkles had improved. The visible difference in the volunteers’ skin appearance was the very first sign of immense potency of the Dr Kinsella CBD Facial Serum. 100% of the volunteers considered the change in their wrinkle appearance slight to very strong. Throughout the study, this result was one of the most appreciated results.

  2. Even Skin tone and depigmentation
    When it comes to managing wrinkles, the key is to change their appearance and take care of other signs of aging such as uneven skin tone and hyperpigmentation. Reducing these signs of aging help a person receive a more youthful look. This also helps one keep wrinkles away for long. Post the 28 days course of facial serum application, 90% of the volunteers considered that their skin had slightly to intensively better and even skin tone. 80% of the volunteers also considered that their skin has a slight to very strong depigmentation effect.


  1. Moisturization and Hydration
    Managing wrinkles, fine lines, skin tone and pigmentation can be made easy by ensuring that our skin has appropriate levels of moisture and hydration. After 28 days of facial serum application, 85% of the female volunteers recorded that their skin felt better moisturized and hydrated. When asked to rate the product on a scale, 90% of volunteers marked the Dr Kinsella CBD Facial Serum as ‘good’ or ‘very good’. This was an important aspect in determining not just the acceptability of the CBD-based facial product but also its future continued usage.

    4. Better skin tolerance
    Before the study was begun, scores were assigned to all volunteers that determined their skin tolerance. During and after the course of the study, no changes in these scores were recorded. This means that the skin of all volunteers had superb skin tolerance to the Dr Kinsella CBD Facial Serum. There were no signs of skin reaction or sensitivity. No volunteers mentioned any discomfort, inflammation, redness or irritation on their skin while the study was underway.

For a long time, consumers have been looking at using a product that provides them immense skincare benefits. From moisturization to hydration to reducing visible signs of accelerated aging, the need for a solid product has always been crucial. This anti-wrinkle product doesn’t just help consumers in obtaining a youthful and younger-looking skin but also enables them to get rid of free radicals in the skin – the leading cause of skin cancer in humans. Having spent many years in the pharmaceuticals and cosmetic industry, finally landing on a product that has immense potency is a clear benefit for consumers. The Dr Kinsella CBD Facial Serum is a powerful, effective and super gentle facial serum that can help consumers looking to reduce the appearance of wrinkles on their face and give their facial skin elasticity, firmness and hydration. With 90% and 95% of the subjects considering the appearance of their fine lines and wrinkles to be improved and 100% of the volunteers considering the change in their wrinkle appearance slight to very strong, the power, potency and efficacy of the Dr Kinsella CBD Facial Serum is evident. Plus, this CBD-based facial serum doesn’t just target wrinkle reduction but also aims at making the skin thoroughly hydrated and moisturized. This is a key requirement in ensuring that the improvement in signs of aging are long-lasting. Another powerful aspect of the Dr Kinsella CBD Facial Serum is it’s superb skin tolerance. The volunteers showed no signs of side effects such as skin irritation, burning sensation, inflammation, redness, itching or sensitivity. This is a crucial selling point for this CBD-based facial serum since gentle and non-toxic anti-wrinkle creams and facial serums are a huge demand in the cosmetics market. People want to make sure that they are using serums that do not carry any other severe side effects. Working closely in this field with powerful products has enabled us to develop Dr Kinsella CBD Facial Serum that’s a game-changer in the field of anti-aging cosmetics. We welcome the opportunity to serve the community better and help people feel confident about themselves by enabling them to have skin that’s healthy, youthful and radiant.

other clinical studies

Skin Tone And Pigmentation Efficacy

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Anti-Wrinkle Study

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