Patch test

My name is Imke Göllner and I am the head of the epicutaneous testing section at Dermatest GmbH. The so-called “patch tests” for testing skin tolerability are very informative as a basis for many examinations and offer the following advantages:

  • information about the compatibility and irritation potential of a wide range of products and materials such as cosmetics, cleaning products, hygiene articles and consumer goods which come into contact with the skin in everyday use
  • rapid results (for standard tests usually within 2-3 weeks)
  • products can be labelled “dermatologically tested” following successful testing
  • our Dermatest® guarantee seal may be used after passing the test
  • versatile possibilities due to variation of the test design and selection of specific skin types

Epicutaneous patch testing under dermatological control

The safety and skin tolerability of products with regular or frequent skin contact is important for all of us. Besides cosmetics and skincare products, this also includes cleaning agents, hygiene items, protective clothing, disinfectants, and much more. Our patch tests are carried out on volunteer test subjects and, of course, are performed under dermatological control. From an ethical and scientific point of view, testing products on humans under medical supervision is indispensable and reasonable, as the “skin system” can only be simulated to a limited extent using cell culture or skin models. The epicutaneous patch test is the simplest, fastest and most convenient method to analyse the irritation potential of products. Further questions such as testing the sensitisation potential or the efficacy of products can be investigated using our application studies or in vitro tests. Our patch tests are performed according to internationally recognised guidelines:

  • at least 30 subjects are recruited for each test
  • both male and female test subjects are included regardless of the product´s eventual target group
  • all subjects are 18 years or older
  • by selecting certain skin types, such as sensitive or atopic skin, tolerability can be tested for specific products and skin types
  • specific pre-treatments of the skin can imitate damaged or stressed skin
  • the single contact during a test is more Intensified in comparison to the prospective application in order to achieve a meaningful resul

Test variations

Standard patch test

Open epicutaneous test

Testing on stressed skin/strip patch test

Testing on damaged skin/scarified patch test

Accredited patch test

Repeat patch test/testing for high sensitisation potential

photo patch test

Photo-patch test

If you think patch testing is an option for your product:

  • Contact us by phone, email ( or via the contact form and we will be happy to advise you individually.
  • Give us the opportunity to get to know you and your product.

What we need from you in order to perform the test:

1. Sufficient sample materials

  • at least 50 ml or 50 g in two – preferably three unbreakable, reclosable and leakproof containers (risk analysis, actual test, retained sample)
  • approx. 30 cm x 30 cm solid material or perhaps 5-6 diapers or panty liners

2. Product composition information

  • for cosmetics: qualitative INCI list of ingredients (for sheet masks and wet wipes additional information on the carrier material)
  • for consumer goods: materials list
  • for biocides: quantitative list of ingredients (with CAS numbers as applicable) and information on the product type (e.g. hand or surface disinfection)
  • for detergents/cleaning products/aerosols: latest safety data sheet and qualitative list of ingredients (with CAS numbers as applicable)
  • quantitative INCI for disinfectants and for hand care gels with disinfectant properties

3. Information on the type of product and, if applicable, precise instructions for use (especially for e.g. skin peelings, face cleansing products, face masks, household washing and cleaning products)

4. Order confirmation

  • Once the products have been received, we will send you an order record which includes all the information relevant to the study
  • You should check this thoroughly, then sign and send it back to us. It serves as an order confirmation for us and later changes may lead to additional costs
  • Based on this product information, we perform a risk assessment prior to testing with reference to a patch test of products on human subjects.

Ask us now about patch test studies

We will get back to you promptly


You can find details about what personal data we store and who has access to it in our data protection policy.

I consent to my personal data being stored and processed in line with the data protection policy and I consent my personal data being processed by Dermatest GmbH in order to answer my contact or information request.

I can withdraw my consent at any time with immediate effect.*


Standard patch tests on all/diverse skin types are performed every week. If we receive all the documents required for the test and the product itself no later than Thursday noon, the product will be included in the testing for the following week once our in-house risk assessment has been approved. We are also happy to review the INCI list before the product is received. Testing on sensitive skin is carried out every 2 weeks.

A standard epicutaneous test takes four days to complete. You will receive the results and reports for all epicutaneous patch tests in the week following the test at the latest.

The accredited patch test meets the highest quality and safety standards which can be achieved with an epicutaneous test. This test is based on our standard patch test, but additionally includes a higher-level review by our safety assessors, approval from an independent ethics committee and a positive and negative control. For the preparation and implementation of the accredited patch test, approx. 8 to 12 weeks must be planned from the time of product delivery onwards.

As the original client, you are more than welcome to request an assessment report be reissued with respect to the product name or company. It is important that an appropriate report is available for any new or alternative product name or distributor. Please get in touch directly by email or phone.

Our team is at your disposal

Dr. Moran Homola

Study Manager Epicutaneous Testing

Dr. Katja Adames

Study Manager Epicutaneous Testing, Management System Representative

Magdalena Wojtaszczyk

Study Coordination Epicutaneous Testing

Diana Thrun

Study Coordination Epicutaneous Testing

Dr. Sarah Risse

Senior Study Manager, Management System Representative

Sandra Klokkers

Study Coordination Epicutaneous Testing

Dorothee Arenskötter

Study Coordination Epicutaneous Testing
Dr. Imke Göllner

Dr. Imke Göllner

Head of Epicutaneous Testing


Rufen Sie uns unter 0251 481637-0 an oder senden Sie eine Nachricht. Wir melden uns umgehend bei Ihnen.

Welche Daten im Einzelnen gespeichert werden und wer Zugriff auf diese hat, erfahren Sie in unserer Datenschutzerklärung.

Ich stimme der Speicherung und Nutzung meiner Daten laut Datenschutzerklärung zu und bin mit der Verarbeitung meiner Daten innerhalb der Dermatest GmbH für die Beantwortung meiner Kontakt- oder Informationsanfrage einverstanden.

Meine Einwilligungen kann ich jederzeit für die Zukunft widerrufen.

Quick request

Call us on 0251 481637-0 or send an email. We will get back to you straight away.
You can find details about what personal data we store and who has access to it in our data protection policy.

I consent to my personal data being stored and processed in line with the data protection policy and I consent my personal data being processed by Dermatest GmbH in order to answer my contact or information request.

I can withdraw my consent at any time with immediate effect.