3-star seal

The 3-star seal is awarded for short-term exposure tests at the site of application, or alternatively for long-term investigations of skin condition or skin function on areas of skin other than the prospective site of application. This includes, for instance, improvement in skin hydration from a face cream which was tested on the forearm. The 3-star seal represents a significantly more complex study design and carries more weight than a simple patch test. This seal may also only be used, provided the formula or composition of the ingredients does not change. Tests to which these seals apply can include measurement of physiological skin parameters, such as determining skin hydration, roughness or elasticity. This can also be done over extended test times. In the same way, 3-star seal investigations can include claims relating to allergy potential (for repeat patch testing – test times longer than 4-6 weeks).

An one-time application test in the prospective area (such as testing face masks on the face for tolerability) can also earn a 3-star seal of approval in view of their greater significance and the more application-based test design. The study design for this testing is closely coordinated with the client and tailored specifically to the relevant product.

Examples of a 3-star seal test:

Tests over a prolonged period to determine other physiological skin parameters (skin hydration, elasticity, skin barrier, etc.)
Intensive one-time testing of a product beyond the normal period of use, tests on the prospective area of application

Benefits of the seal of approval

The Original Dermatest® seal of approval is evidence of consumer safety for your customers and consumers of cosmetics and consumer goods.

Recognition of the Original Dermatest® seal has risen sharply in recent years. Consumers are coming across the Original Dermatest® seal more and more, not only in product advertising in print and online media, but also particularly on product packaging in the retail sector.

Consumers are coming across the Original Dermatest® seal of approval as evidence of consumer safety in more and more ways. And as a guarantee for the traceability of the test methods, the Original Dermatest® seal of approval is a clear mark of quality for your products.

Products which have earned this seal are keeping the promise of tested and verified quality. Guaranteed.

Your route to the seal of approval in 4 steps

Ask us now about the 3-star seal

We will get back to you promptly

Companies who trust our seal

Zulfees Clean Towels

Zulfees

APRICOT UV-Indikator Sticker

APRICOT GmbH

LERABELL Morning Dew Shampoo & Conditioner

Lerabell GmbH

waschies® Make-up removal pad and cleansing pad

waschies GmbH

APOTHE UV Cera6x Lacto Aqua Sun Essence

APOTHE

Welldora – Kissenbezug aus 100% Seide

GalleryLab GmbH

FAQ

What is the difference between the various seals?

The Original Dermatest^® seals represent traceability of test methods as well as for consumer safety and manufacturer endorsement. Depending on the test design and type of study, the seals have four different categories signifying their importance.

What testing is required to earn the 3-star seal?

The 3-star seal is awarded for short-term exposure tests at the site of application, or alternatively for long-term investigations of skin condition or skin function on areas of skin other than the prospective site of application, or open patch testing on the site of application requiring at least 20 test subjects. The 3-star seal represents a significantly more complex study design and carries more weight than a simple patch test.

How much does the seal cost?

The seals come free of charge provided your product has successfully passed the relevant testing.

How long is the seal valid for?

There is no time limit set for using the seal. However, if anything changes in the composition or formulation of the products, a new test must be arranged. Under EU legislation, the date the testing was carried out must appear on the product packaging, which is why the month and year of testing are included as part of the seal.

Can the colour or design of the seal be changed to suit our graphic design?

This is possible subject to strict limits. Our design manual gives you further information about how our Dermatest seals may be used. Please get in touch.