The authenticity of Yuewei lotion samples can be identified in the following ways:

1. Observe the packaging: Genuine samples usually have exclusive packaging and labels, and have fine workmanship and fonts. Clear. If the writing on the package is blurred, the splicing is irregular, or the label is rough, it may be a fake.

2. Check the color and texture: After opening the sample, observe whether the color and texture are the same as the original product. If the texture is sticky or the color is obviously inappropriate, it may be a fake.

3. Smell: The authentic Yuewei lotion sample will have a certain fragrance. If there is an obvious odor or difference compared with the original product, it may be a fake.

4. Scan the QR code: Some brands will print QR codes on the samples. You can scan the QR code to confirm the authenticity of the samples.

5. Through purchase channels: When purchasing samples of Yuewei Water Emulsion, you should choose regular merchants or platforms to avoid buying fakes.

It should be noted that the above method does not fully guarantee the authenticity of the sample and is only recommended as a reference. If you have any questions about the authenticity of the product, it is recommended to contact official customer service for confirmation.