the science
behind kleen.
Built on knowledge. Inspired by athletes. Formulated with purpose.
At kleen, we believe good hygiene starts with understanding the science behind the ingredients we use.
Our formulas are developed around the real needs of active people, athletes, fighters, gym-goers and anyone who sweats, trains and pushes their body.
From essential oils traditionally valued for their cleansing properties to ingredients selected for their ability to support healthy skin, every ingredient has a purpose.
Explore the research behind some of the key ingredients used across our range.
Important Notice
The information provided on this page relates to individual ingredients and published research. It does not represent medical claims about kleen. products.
kleen products are cosmetic products designed to support everyday hygiene and skin care routines. They are not intended to diagnose, treat, cure or prevent infections, diseases or medical conditions.
section 1:
Why Hygiene Matters for Athletes
The Athlete Hygiene Challenge
Combat sports and high-contact training environments create unique hygiene challenges.
Athletes regularly experience:
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Sweat and moisture build-up
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Shared training environments
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Close skin-to-skin contact
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Frequent washing
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Friction from equipment and clothing
Maintaining good hygiene habits — including regular washing, cleaning equipment and caring for your skin — plays an important role in supporting overall skin health.
section 2:
Ingredient Research Library
Tea Tree Essential Oil
Why we use it
Tea Tree Oil has been used for generations in traditional skincare routines due to its refreshing and cleansing properties.
Research has investigated Tea Tree Oil's activity against various microorganisms, including bacteria and fungi.
Research Areas
✓ Skin hygiene
✓ Microbial activity
✓ Fungal research
✓ Cosmetic applications
Studies & Articles
Systematic Review: Tea Tree Oil for Human Health
A systematic review evaluated clinical research on Tea Tree Oil and explored evidence around its antimicrobial properties and safety.
Tea Tree Oil Against Clinical Pathogens
An in-vitro study examined the antimicrobial activity of Tea Tree Oil against selected bacterial and fungal pathogens.
Tea Tree Oil Against Fungal Organisms
Research has investigated the antifungal activity of Tea Tree Oil against various fungal species, including dermatophytes and yeasts.
Eucalyptus Essential Oil
Why we use it
Eucalyptus oil is traditionally valued for its refreshing aroma and has been researched for its antimicrobial properties.
Studies & Articles
A systematic review examined research into Eucalyptus globulus essential oil and its activity against bacteria, including MRSA strains.
Antimicrobial Activity of Eucalyptus Essential Oil
This research evaluated eucalyptus essential oil against multiple bacterial and yeast species.
Peppermint Essential Oil (Mentha piperita)
Why we use it
Peppermint oil provides a refreshing cooling sensation and contains naturally occurring compounds that have been researched for antimicrobial activity.
Studies & Articles
Peppermint Essential Oil Antibacterial Research
Research evaluated peppermint essential oil for antibacterial and antibiofilm activity.
Peppermint Oil Against Resistant Bacteria
A study investigated peppermint essential oil against multiple bacterial strains, including Staphylococcus aureus.
Activated Charcoal
Why we use it
Activated charcoal is widely used in cleansing products because of its adsorption properties, which allow it to bind certain substances.
Aloe Vera
Why we use it
Aloe Vera is traditionally used in skincare formulations because of its moisturising and soothing properties.
Vegetable Glycerine (Glycerol)
Why we use it
Glycerine is one of the most established moisturising ingredients in cosmetics. It is a humectant, meaning it helps attract and retain moisture in the skin.
Studies & Articles
Research reviews glycerol's role in skin hydration and barrier function.
Glycerol and Skin Barrier Recovery
A study investigated glycerol's ability to improve skin hydration and support barrier function.
Coconut Oil
Why we use it
Coconut oil is commonly used in skincare because of its emollient properties and ability to soften and condition skin.
Lavender Essential Oil
Why we use it
Lavender oil is traditionally used in skincare for its calming aroma and soothing cosmetic applications.
Chamomile Essential Oil
Why we use it
Chamomile is traditionally associated with gentle skincare formulations.