In the European Union, the law specifying the requirements for registration and notification of cosmetic products has been unified. All countries in the European Union are subject to Regulation (EC) No. 1223/2009. It specifies all requirements, including: regarding permissible ingredients, product labeling, tests and required documentation. The cosmetic registration process can be divided into the 6 stages described below. They define whether the product can be legally registered and whether the product does not pose a threat to users.

1. Assessment of whether the ingredients used, form of use and packaging comply with European requirements and fit the definition of a cosmetic product. This information can be found in the above-mentioned Regulation No. 1223/2009;
2. Defining the required scope of testing for the product. This is done on the basis of an assessment of the product's marketing claims by a specialist and the requirements based on the product's form;
3. Collecting the necessary documentation and preparing the product for notification. The list of necessary documents is usually presented by the Safety Assessor who will create the Safety Assessment Report;
4. Creation of a Cosmetic Product Safety Assessment Report (CPSR). This is a document in which a specialist with confirmed qualifications and knowledge (Safety Assessor) assesses the product's compliance with applicable law and defines the product's safety;
5. Notification of the cosmetic product on the Cosmetic Product Notification Portal (CPNP). The notification is made by a person who has the necessary knowledge and access to the company's account on the portal;
6. In Poland, the unit that supervises the correct introduction of cosmetics to the market is the State Sanitary Inspection. It is she who can call on the company to verify the compliance of documentation and tests.

The process of introducing a new cosmetic to the market can be complicated and it is worth supporting in this area with the knowledge and experience of people dealing with it professionally. Each country's local law may individually impact certain areas of cosmetic product regulation.