
Case study
Medical polycarbonate a clear choice for user-friendly device
Hyperhidrosis, a medical condition characterized by excessive sweating, affects the quality of life of about 1 in 20 people worldwide. Dermadry Laboratories lnc. (opens in a new tab) selected Covestro polycarbonate to form an important component of its Dermadry Tap Water Iontophoresis (TWI) device for at-home treatment.
Case study · January 31, 2023
Find material offering required properties, great aesthetics
Dermadry found existing at-home treatment devices for excessive sweating were complicated to use, bulky and looked too technical. With its latest product iteration, Dermadry set out to design a user-friendly, ergonomic and aesthetically appealing device. Treatment trays are an important element of the device, and the company searched for a material that would meet rigorous specifications yet also contribute to an aesthetic that evokes wellness and offers a soothing experience to its user.
Design medical device offering excellent form, functionality
The treatment trays of the new all-in-one Dermadry Total machine needed to combine form and functionality. More specifically, they needed to offer excellent impact resistance, clarity, quality and biocompatibility while at the same time offering strong aesthetics, including a glossy surface and ergonomic design.
Dermadry evaluated several other materials, including acrylonitrile butadiene styrene and polypropylene for this important component and Makrolon® 2458 polycarbonate fit the bill.
“We sought a biocompatible material for intact skin, beyond the standard properties of polycarbonate resins. Thanks to Makrolon®, Dermadry was able to design a product that evokes wellness and offers a soothing experience. Covestro’s excellent reputation, and ISO 10993 testing, sealed the decision.”
Mathieu Mireault
Marketing Director, Dermadry Laboratories Inc.

The Dermadry treatment trays for hands and feet, which also doubles as the case, is made from Makrolon® 2458 polycarbonate. This medical-grade polycarbonate is suitable for steam sterilization, offers low viscosity, easy release, and is biocompatible according to many ISO 10993-1 test requirements.
Makrolon® 2458 medical polycarbonate offers clear benefits
Dermadry selected Makrolon® 2458 polycarbonate for its multiple benefits, including excellent impact resistance, clarity, biocompatibility and quality, complemented by strong aesthetics that resulted in an attractive, ergonomic device.
For over 50 years, healthcare device and equipment manufacturers have relied on biocompatible, medical-grade materials from Covestro for a wide range of applications, from IV access components and surgical instruments to drug delivery solutions.
“It’s incredibly rewarding to know Covestro materials are making a positive difference in people’s lives. We’re honored to have earned the confidence and trust of Dermadry, and in doing so, playing a role in filling a real need in the market.”
Anthony Leo
Business Development Manager, Covestro LLC
Key Benefits
Impact resistant
Strong yet lightweight
Clarity
Is clear and offers glass-like transparency
Aesthetics
Offers design flexibility that is a designer’s dream
Biocompatibility
Biocompatible according to many ISO 10993-1 test requirements
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