China mainly adopts 8 lists to regulate the cosmetic ingredients:

1) Inventory of Existing Cosmetic Ingredients in China 2021 (8972 ingredients included);

2) Inventory of Prohibited Ingredients Used in Cosmetics 2021 (1284 ingredients included);

3) Inventory of Prohibited Plant and Animal-Derived Cosmetic Ingredients 2021 (109 ingredients included);

4) List of Restricted Ingredients Used in Cosmetics 2015 (47 ingredients included);

5) List of Permitted Preservatives Used in Cosmetics 2015 (51 ingredients included);

6) List of Permitted Sunscreens Used in Cosmetics 2015 (27 ingredients included);

7) List of Permitted Colorants Used in Cosmetics 2015 (157 ingredients included);

8) List of Permitted Hair Dyes Used in Cosmetics 2015 (75 ingredients included).

Ingredients listed in the IECIC are regarded as "existing" ingredients, otherwise, they are new cosmetic ingredients.

In China, new cosmetic ingredients require registration or notification with the NMPA prior to use in cosmetic products. The notified/registered new cosmetic ingredients will be subject to a 3-year safety monitoring period. If there are no safety issues found within the 3 years, the ingredients will be included in the IECIC. Therefore, in the future, the IECIC will be dynamically updated.

IECIC serves as the basis to judge whether a cosmetic ingredient is new or existing, while IECSC is the basis to judge whether a substance is identified as a new chemical substance subject to registration requirements. Since cosmetic ingredients are chemical substances, a cosmetic ingredient not listed in the IECSC (even if it is included in the IECIC) will require registration of new chemical substances prior to manufacture or import.

The INCI Chinese Version is translated to standardize the Chinese translation of INCI name, cosmetic labeling and instructions, which is certainly not a criterion for illustrating the regulatory status of an ingredient.

The highest historical use concentration refers to the maximum usage concentration of cosmetic ingredients used in existing cosmetics in China, which is not equal to the maximum allowable or safe usage concentration. The highest historical use concentration can be used as recognized evidence in the simplified safety assessment report to provide a reference for cosmetic safety assessment. For ingredients without declaring the highest historical use concentration in the Inventory, cosmetic registrants and notifiers can provide corresponding materials as assessment evidence or conduct safety assessment in accordance with the requirements in Technical Guidelines for Cosmetic Safety Assessment to ensure the safety of the ingredient.

If the ingredient only has the highest historical use concentration in leave-on products, the use concentration in rinse-off products can refer to that in leave-on products.

Safety and Technical Standards for Cosmetics 2015 serves as the overarching technical standard for cosmetics safety supervision and testing in China. The Standards contains the prohibited, restricted, and permitted cosmetic ingredients, physical and chemical testing methods for cosmetics, microbiological testing methods, toxicological testing methods, human body safety testing methods, and human body efficacy evaluation testing methods.

Radioactive substances which are natural or caused by man-made environmental pollution are not included in the Inventory. But the content percentage of these radioactive substances shall not be increased in the cosmetics production process, and shall not exceed the limits set for protecting workers and the public from radiation damage.

Prohibited ingredients in this Inventory include their extractions and preparations.

If the detailed parts are indicated, the prohibition is only imposed on the specified parts; otherwise, the whole plant is prohibited including the flower, stem, leaf, fruit, seed, root and their preparations.

The ingredients with notes of “prohibited ingredient” in the Inventory of Existing Cosmetic Ingredients 2021 (IECIC 2021) are all prohibited for use in cosmetics, even though they are not included in the Inventory of Prohibited Ingredients Used in Cosmetics and Inventory of Prohibited Plant and Animal-Derived Cosmetic Ingredients (2021).

1. The Index is an objective collection of ingredients used in cosmetics available in China, and are not included in Safety and Technical Standards for Cosmetics (STSC). Authoritative agencies such as the Scientific Committee on Consumer Safety (SCCS) and Cosmetic Ingredient Review (CIR) have published assessment conclusions for these ingredients. The Index serves as a reference for enterprises conducting cosmetics safety assessments. Registrants and notifiers can utilize the assessment conclusions provided by authoritative agencies, including but not limited to SCCS and CIR, for these ingredients.

2. When adopting assessment conclusions, the following requirements should be met:

1) Analysis of assessment conclusions: Conclusions that comply with China's cosmetic regulations and usage conditions can be adopted;

2) Staying updated: Given advancements in science and technology and evolving knowledge, the types of ingredients assessed and their assessment conclusions may change. Enterprises should prioritize the latest assessment conclusions;

3) Handling diverging conclusions: In cases where different authoritative agencies offer different assessment conclusions, enterprises should scientifically and reasonably adopt relevant conclusions. The reliability and relevance of the data should be the principle of selection.

Ingredient Usage Information of Marketed Products is an objective collection of ingredients that meet the following three criteria:

1) They have been used in special cosmetics available in China, and the special cosmetics registration certificate is still valid;

2) They are not included in Safety and Technical Standards for Cosmetics (STSC);

3) No assessment conclusions from authoritative agencies are available.

When using the concentration information provided in Ingredient Usage Information of Marketed Products, registrants and notifiers should comply with relevant national laws, regulations, standards, and technical specifications. They must also assume responsibility for ensuring the quality and safety of their products.

The specified ingredient concentrations in Ingredient Usage Information of Marketed Products serve as a reference for enterprises conducting cosmetics safety assessments. Cosmetic registrants and notifiers should appropriately utilize the ingredient concentration based on the product's application method and site, following the following principles:

1) For the same ingredient with the same application site, if only the ingredient concentration of leave-on products is available, the concentration of this ingredient in leave-on products can be referred to in the safety assessment of this ingredient in rinse-off products. However, if only the ingredient concentration of rinse-off products is available, the concentration of this ingredient in rinse-off products cannot be referred to in the safety assessment of this ingredient in leave-on products;

2) For the same ingredient with the same application method, the safety assessment can be conducted in the order of 1) whole body skin, trunk area, face, lips, and eyes, or 2) whole body skin, trunk area, hands, feet, head, and hair. The ingredient concentration of product with a former-ranked application site can be referred to in the safety assessment of products with a later-ranked application site. However, when the product's application site is the eye and the ingredient concentration of products applied to other sites is referred to, the eye irritation of the ingredient should be separately assessed.

In cases where the concentration of an ingredient used in cosmetic products exceeds the concentration specified in Ingredient Usage Information of Marketed Products, registrants and notifiers are required to conduct safety assessments in accordance with Technical Guidelines for Cosmetic Safety Assessment. Alternatively, they can utilize other types of ingredient data specified in the Guidelines for Cosmetic Ingredient Data Usage to demonstrate the safety of the ingredients used in their products.