Natural skincare. Independently tested in New Zealand.
Kareen Holland has always believed that natural skincare should do more than simply sound good. She wanted to understand what her formulations were actually doing for the skin.
In July 2016, Kareen commissioned an independent New Zealand laboratory to scientifically test 13 KD One formulations.
The testing examined measurable responses including elastin production, collagen production, skin-cell reproduction and other responses relevant to each formulation.
The results gave Kareen independent data behind products she had already spent years developing and using with customers.
13 formulations. Independent results.
Independent laboratory findings from testing carried out in New Zealand in July 2016.
Hand & Body Cream
In the 2016 laboratory testing, KD One Hand Cream showed an antioxidant effect on inflammation of up to 100%.
Vitamin Enriched Facial Moisturiser with Kiwifruit
In the 2016 laboratory testing, this formulation significantly stimulated elastin production in cultured skin fibroblast cells. Increased elastin content is associated with improved skin elasticity.
Shop Vitamin Enriched Facial Moisturiser with Kiwifruit→
Rich & Intensive Moisturiser
In the 2016 laboratory testing, this formulation promoted the reproduction of human skin fibroblast cells in culture by up to 45%.
Shop Rich & Intensive Moisturiser →
Skin Performance Plus Facial Moisturiser
In the 2016 laboratory testing, Skin Performance Plus significantly stimulated elastin production and promoted skin-cell reproduction by up to 90%.
Shop Skin Performance Plus →
Vitamin Enriched Facial Moisturiser with Manuka Honey
In the 2016 laboratory testing, this formulation with UMF16+ Manuka Honey was shown to strongly stimulate collagen production in human skin fibroblast cells.
Shop Vitamin Enriched Facial Moisturiser with Manuka Honey →
Light Hydrating Plus Facial Moisturiser
In the 2016 laboratory testing, Light Hydrating Plus significantly stimulated elastin production, supporting improved skin elasticity.
Shop Light Hydrating Plus Facial Moisturiser→
Skin Clear
In the 2016 laboratory testing, the Skin Clear formulation showed an antioxidant response in the inflammation assay of up to 100%. The laboratory also reported a significant reduction in inflammatory activity in the tested skin-cell model.
Shop Skin Clear→
Eye Serum
In the 2016 laboratory testing, Eye Serum stimulated the reproduction of human skin fibroblast cells by up to 29% and also stimulated elastin production.
Shop Eye Serum→
Lightening Serum
In the 2016 laboratory testing, this formulation reduced melanin production by up to 84% in the test system.
Shop Lightening Serum→
Recovery Rub
In the 2016 laboratory testing, Recovery Rub reduced inflammatory activity by up to 90% in the test system.
Shop Recovery Rub→
Cooling Balm
In the 2016 laboratory testing, Cooling Balm reduced inflammatory activity by up to 81% in the test system.
Shop Cooling Balm→
Soothing Antiseptic Balm
In the 2016 laboratory testing, Soothing Antiseptic Balm produced a response of up to 80% in inflamed cells in the test system.
Shop Soothing Antiseptic Balm→
Peppermint Shampoo with Manuka Honey & Blackcurrant Seed
In the 2016 laboratory testing, this formulation showed an effect on inflammatory activity of up to 94%.
Shop Peppermint Shampoo with Manuka Honey & Blackcurrant Seed→
More than natural ingredients
For Kareen, creating KD One has always been about combining natural ingredients with experience, careful formulation and evidence. The 2016 laboratory testing gave independent insight into the performance of 13 KD One formulations — products developed through years of working closely with real skin.
Discover Kareen’s Story →
Shop KD One →
Laboratory findings relate to the formulations and test systems used in the 2016 testing. Individual results may vary.