For a better, Microbiome-friendly world!

Frequently asked questions about our Certification


Are your tests animal-free?

That's right, our tests do not involve animal testing.

Is there a control sample in each test?

We always run a control with the experiments, which is PBS buffer.

Why do you test in vitro?

In vitro represents the scientific gold standard for measuring the influence of substances on the human microbiome. In vitro tests provide valid, meaningful results under strict control conditions with reproducible and standardized test methods. This is a general requirement for certifications.

Will the test results be published?

As we are a registered certification brand, we are required to publish the test reports of successfully certified products on our website.

Can you help us formulate Microbiome-friendly cosmetics?

Yes, our internationally organized R&D department supports you in the development of new products.

Do you have references of cosmetic ingredients that cause modifications of the microbiome?

We know that substances such as fragrances, essential oils, preservatives or other antimicrobial substances can disrupt or destroy the skin's microbiome. Nevertheless, it always depends on the concentration and number of ingredients used and ultimately on the overall formulation of the product.

What property rights do you have of the "Microbiome-friendly" seal of quality?

Our seal is not only a common trade mark, but a brand registered as certification mark in almost all countries of the world.

What amount of each product do you need to perform the tests?

For the cosmetic certification we need 3 x 30 ml of each product.
For textiles 3 m2 of your fabrics will do.

We would also like to know more about the claims we may use after certification.

Possible claims are:

  • The product leaves the skin microbiome untouched / intact.
  • Products respect the microbiome balance and do not hinder the skin to defend its balance (specifically against Staphylococcus aureus, a bug which is the cause for eczema and psoriasis).
  • Products do respect the natural healthy microbiome of the skin, both on the surface and in the deeper skin layers.
  • Products do respect / do not harm the microbial diversity of the skin.

It is key to say that the microbiome is not altered, but left in its balance. In case you are not sure which claims you may use just contact us.

What about regulatory?

At the moment there are no specific global regulations in place for skincare products or ingredients targeting the skin microbiome. The cosmetics industry has to follow the regulatory for standard cosmetics regarding safety and claims.

In 2021, the The International Cooperation on Cosmetics Regulation (ICCR) working group published the document, “Microbiome and Cosmetics,” a survey of product and ingredient terminologies and regulatory approaches.

We will follow discussions attentively – for a better, Microbiome-friendly world!

Is it also possible for cosmetics with preservatives to be Microbiome-friendly?

A preservative in a final formulation does not stand against a Microbiome-friendly certification. It depends on the type of preservative and its concentration.
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