How to handle the RIPT repetitive patch test for hair dye, hair mask and other products sold on Amazon US ? Hair dye cosmetics have the effect of changing hair color, commonly known as hair dye. Chinese people belong to the yellow race, and most of them have white hair dyed black for beauty, so hair dyes are also relatively monotonous. Europeans and Americans are accustomed to bleaching or bleaching their hair first, and then dyeing their hair into golden, yellow, flax, reddish-brown, violet, etc., so there are many kinds of hair dyes. Since the reform and opening up, under the influence of the international popular hair color, my country has also successively launched color hair dyes of various shades, making my country's hair dye market shine.

In the 21st century, my country will enter an aging society. As the number of silver-haired people gradually increases, the market demand for hair dyeing products will increase day by day.Moreover, with the fast pace of life and intense work in today's society, gray hair and hair loss caused by tension and busyness have increased significantly, which has brought a huge market for hair dyeing products.

Cosmetics such as hair dyes are in direct contact with the surface of the human body during use. If there is a problem with the product, it may cause adverse reactions including skin. Patch testing, as a commonly used cosmetic safety test, can detect this potential to ensure the safety of cosmetic use. Common types of skin patch tests include closed patch test, repetitive open type test, and repetitive injury patch test. Under normal circumstances, cosmetic skin-occlusive patch tests are commonly used. In special cases, such as freckle-removing cosmetics and powdered (such as powder, foundation) sunscreen cosmetics, when the human skin patch test shows irritating results or the results are difficult to judge, the skin repeated open smear test should be added. The skin repeatability open test is also suitable for rinse-off products, hair dyes, hair removal products and other products.

1. What is HRIPT/RIPT? RIPT: Repeated Insult Patch Test (RIPT), which is the most rigorous research at present. There is no potential irritation or allergy after using products or raw materials. Nine groups of induced patches are used, and a period of rest This was followed by a set of challenge tests. HRIPT: Human Repeated Insult Patch Test (HRIPT)

2. To ensure that there is no potential irritation or allergy after using the product or raw material. Amazon requires cosmetics, beauty products, nail glue, etc. to do HRIPT/RIPT multiple repeated closed skin patch test reports. Stores without relevant test reports may face penalties such as products being removed from the shelves and withholding payment!

3. Test process ▨ After the sample arrives at the laboratory, the test substance will be given an independent laboratory test number, and will be recorded in the test log to verify the batch number, sample specification, sponsor, date of receipt and test request.

▨Volunteer screening: According to the opinion of the research and development staff, the tester must not have any systemic disease or skin history, otherwise it will hinder the test results or increase the risk of adverse reactions in the body. If the skin color is suitable for erythema test observation, any skin Nature and any race can participate, and a research sample of 53 people was finally screened. ▨The test is divided into an induction period and a challenge period. Through repeated tests, it is finally determined whether the subjects have erythema or other adverse stimulation reactions.

Cosmetics HRIPT / RIPT+COA certificate processing process:

1. Project application – submit a certification application to the inspection and supervision agency.

2. Data preparation – According to the standard requirements, the enterprise prepares the relevant certification documents.

3. Product testing – the company sends the samples to be tested to the laboratory for testing.

4. Preparation of reports – certified engineers prepare reports based on qualified test data.

5. Submit for review – the engineer will review the complete report.

6. Issuing the certificate – after the report is verified and correct, the report will be issued