Hair Problems
Brought the shine back to my hair after switching.
About Picki Niki – Our Mission for Better Skin & Hair
안녕하세요 [Hello in Korean]
My name is Niki
When I moved from Seoul to Berlin, I noticed how different the shower water felt compared to back home. After years of research with Korean filter experts, I created PICKI NIKI – designed in Germany, made in Korea.
2019
Moved from Seoul to Berlin – excited for a new chapter
2020
Hard water destroyed my skin and hair. No product helped.
2021
Developed a vitamin C filter formula with Korean experts
2022
Launched PICKI NIKI – designed in Germany, made in Korea
2026
Opened UK Fulfillment Center – expanding across Europe
How filtered shower water changed my routine
LABORATORY TESTED & PROVEN IN THE COMMUNITY
2019
2021
I wanted a shower routine that felt the way it did back in Seoul
When I moved to Berlin, my hair felt different almost immediately. The water in Berlin is much harder than in Seoul and leaves more mineral residue. So I started building a shower routine around filtered water. After switching, my hair feels softer and easier to style, and my shower routine is back to feeling pleasant.
2019
2023
Filtered shower water made a difference for my routine
Berlin's tap water has more dissolved minerals than I was used to from Seoul. Once I switched to a filtered shower, the way my skin felt afterward improved noticeably. Individual experiences vary - this is my personal experience with the routine.
Click here to find out all about these topics:
Skin Problems
Softer-feeling skin from the very first wash.
Hair shedding from hard-water damage
How hard water affects your hair, and what filtering can do.
EVIDENCE & SOURCES
References
Independent product testing and certifications.
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P&K Skin Clinical Research Centre. Primary Skin Irritation Test. Seoul, Korea. 2023.n=30, Skin Irritation... lab test
P&K Skin Clinical Research Centre. Primary Skin Irritation Test. Seoul, Korea. 2023.
n=30, Skin Irritation Index 0.03 (non-irritant).
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World Atopy Association (WAA). Atopy-friendly Product Certificate. 2025. Valid 2025-03-06 to 2027-03-05. certification
World Atopy Association (WAA). Atopy-friendly Product Certificate. 2025. Valid 2025-03-06 to 2027-03-05.
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International Certification Registrar Ltd. (ICR). ISO 9001:2015 (Quality Management) + ISO 14001:2015 (Environmental Management).... certification
International Certification Registrar Ltd. (ICR). ISO 9001:2015 (Quality Management) + ISO 14001:2015 (Environmental Management). Valid 2025-09-16 to 2028-09-15.
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Jabbar-Lopez ZK, Craven J, Logan K, et al.. Longitudinal analysis of the effect of... peer reviewed
Jabbar-Lopez ZK, Craven J, Logan K, et al.. Longitudinal analysis of the effect of water hardness on atopic eczema: evidence for gene-environment interaction. British Journal of Dermatology. 2020.
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Korea Environment and Water Works Institute (KEWI). Residual Chlorine Removal Test. Seoul, Korea. 2020.100... lab test
Korea Environment and Water Works Institute (KEWI). Residual Chlorine Removal Test. Seoul, Korea. 2020.
100 L synthetic water at 0.19 mg/L free residual chlorine, passed through Vitamin Filter. Outlet: not detected. Flow 2.52 L/min. T = 21-23 degrees C.
Note: real shower conditions are typically higher pressure and warmer than this laboratory test. The Vitamin C gel cartridge is engineered as a self-regulating system: higher pressure releases more Vitamin C from the gel matrix, and higher temperature accelerates the chlorine-neutralisation reaction. Under typical shower conditions these dynamics are expected to keep real-use performance broadly comparable to the laboratory result.
Full certification numbers and test report IDs are available on request.
