Rejuvenated, founded by Kathryn Danzey in 2003, has redefined the health and wellness industry with its innovative, science-backed supplements designed to promote beauty from within. With over 50 years of experience in health and beauty, Kathryn has transformed her passion for nutrition into a globally celebrated brand, winning over 160 awards and gaining recognition in publications like Vogue and The New York Times.

In this interview, Kathryn shares the inspiration behind Rejuvenated, her groundbreaking work in collagen supplements, and the trends shaping the future of the industry.

Nicolle: What inspired you to launch Rejuvenated in 2003, and how did your early experiences in nutrition shape the brand's philosophy?

Kathryn: I’ve worked in the health and beauty industry for over 50 years and nutrition was always a big part of my overall client care. We started to promote the concept of ‘beauty from within’ almost 30 years ago and saw such amazing benefits from combining nutrition with skincare and treatments.

‘Beauty from within’ wasn’t a recognised concept at the time and achieving optimum nutrition required taking a lot of supplements to get the desired results. We saw that it was important to create a regime that could be easily introduced to a client’s daily life. Supplements are designed to provide nutrients that can’t be consumed in sufficient quantities. Once we reach the age of 25, we produce lower levels of substances that our body needs and requires to stay youthful; for example, collagen is one of those. From the age of 35, our NAD+ levels start to decline and we tire more easily. Choosing the right supplements can benefit your body and help you stay more youthful.

Nicolle: Rejuvenated has won over 160 awards and has been featured in renowned publications like Vogue and The New York Times. How has this recognition influenced the growth and credibility of the brand?

Kathryn: As a family-owned brand with a limited marketing budget, having the recognition of these awards has been invaluable in building customer trust. This trust extends not only to our retail customers but also to international distributors, who have shown increased confidence in our brand thanks to these accolades.

Nicolle: Your collagen drink was among the first high-potency options in the UK. What motivated you to focus on collagen, and how have you seen its impact evolve over the years?

Kathryn: At the time nutrition wasn’t considered to be important and the whole focus was on products that we applied to the skin. Serums contained ingredients such as grape seed extract and resveratrol. I couldn’t understand why we were trying to push these serums into the skin when we could eat extracts from the plant. I decided to create a range of products which would help to nourish, not just the skin but the whole body from the inside out. Collagen Shots was the first product as most women knew that it was important for their skin, and I felt that they might find it a novel concept.

We literally sold it to a few clinics initially and things grew from there. Customers were calling to say that their friends had this amazing skin drink, and how could they buy some. This led to us setting up our web page, and incredibly, with the explosion of social media, our products were finding their way around the world. We’re amazed by how many people have taken our products over the years. It makes our day when someone gets in touch to say how much better our products make them feel.

Nicolle: Rejuvenated emphasizes ethically sourced, natural, and clinically backed ingredients. Can you share more about the process of selecting these ingredients and ensuring their traceability?

Kathryn: We work closely with our production team to ensure that all our ingredients are sourced sustainably and ethically. Every ingredient is carefully chosen only after thorough research and review of clinical studies to confirm its efficacy.

Nicolle: In addition to running Rejuvenated, you’re a certified health coach and a member of the UK Health Coaches Association. How does this expertise inform your approach to product development and consumer education?

Kathryn: As a certified health coach and member of the UK Health Coaches Association, my knowledge helps in the development of both products and consumer education. It helps me to stay attuned to the latest health trends, research, and consumer needs. When developing new products, I always focus on evidence-based ingredients and work to create solutions that address real health concerns.

Nicolle: Rejuvenated’s supplements address a range of health concerns, from skin conditions to joint problems. Which product are you most proud of, and why do you believe it has resonated so strongly with customers?

That’s a difficult one. If I could only take one product, I would choose Collagen Shots as it supports all the connective tissues within the body and has a healthy dose of antioxidants too. Probably the product that I am most proud of though is Regenerate. As we age, our energy levels naturally decline, a process linked to the reduction of a vital co-enzyme called NAD+ (Nicotinamide Adenine Dinucleotide).

This decline is associated with ageing processes and certain health conditions. Regenerate is formulated with NMN, a powerful molecule that helps restore NAD+ to youthful levels, supporting healthy mitochondrial function and safeguarding cellular DNA. Additionally, this supplement features plant-based compounds that activate sirtuins, longevity-boosting proteins essential for cellular health. Together, NAD+ and sirtuins repair damaged DNA, enhance muscle and cognitive function, improve insulin sensitivity and cardiovascular health, and combat visible signs of ageing like wrinkles and fine lines.

Nicolle: As someone with over 40 years of experience in health and wellbeing, what emerging trends or innovations in the supplement industry excite you most for the future of Rejuvenated?

Kathryn: I believe the most exciting development in the supplement industry today is the growing awareness among consumers. Over 20 years ago, it was widely acknowledged that vitamin C could support overall health, but now there is a significant interest in the science driving this rapidly expanding sector within the beauty and wellness industry. Here are my top tips for 2025.

NAD+ Boosters. Supplements like NMN and NR (Nicotinamide Riboside) increase NAD+ levels, a molecule essential for energy production, DNA repair, and slowing cellular aging. Restoring NAD+ can improve metabolism, cognitive function, and overall vitality.
Sirtuin Activators. Compounds like resveratrol (found in red wine) and plant-based molecules activate sirtuins, proteins that enhance cellular repair, reduce inflammation, and extend lifespan in animal studies.
Mitochondrial Support. Ingredients such as resveratrol and Nicotinamide mononucleotide support mitochondria, the “powerhouses” of cells. Healthy mitochondria are vital for energy, longevity, and slowing age-related decline.
Telomere Protection. Supplements like Astragalus extract may help preserve telomeres, the protective caps on DNA, slowing cellular aging and supporting longevity.
Antioxidant Defence. Antioxidants like astaxanthin, vitamin C, and turmeric combat oxidative stress, a major factor in aging and chronic disease.
Adaptogens. Herbs like Rhodiola, Ashwagandha, and L-theanine help reduce stress and regulate hormones, promoting resilience and longevity.
Gut Health and Longevity. Probiotics and prebiotics support gut health, which is closely linked to overall well-being and aging gracefully by reducing inflammation and enhancing nutrient absorption.
Omega-3 Fatty Acids. Found in fish oil, Omega-3s improve cardiovascular health, reduce inflammation, and support brain function, all essential for healthy aging.
Vitamin D. Known as the “sunshine vitamin,” it supports bone health, immunity, and cellular function, all linked to increased longevity.
Fasting Mimicking Supplements. Certain supplements mimic the effects of fasting, activating longevity pathways like autophagy, which clears damaged cells and promotes regeneration.

Rejuvenated stands as a testament to the transformative power of combining science, sustainability, and a deep understanding of nutrition. With groundbreaking products like Collagen Shots and Regenerate, the brand continues to lead the way in the beauty and wellness industry, focusing on longevity, vitality, and holistic health.

As the future of supplements evolves, Rejuvenated remains at the forefront, empowering individuals to embrace beauty and wellness from within.

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Nicolle Knapova is a little bit of everything. She is a freelance translator, content creator. She loves indie music and is always browsing through Spotify to find the next amazing artist to obsess over. Her love for storytelling means she’s always writing something and she’s not afraid of any genre. Her biggest dream is to be a published author. If she’s not writing her fan fiction, she’s writing her poetry and sharing it on her Instagram @elisecaverly.

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