In order to get rid of melasma on her face, Ms. Li started using Meiya Freckle Freckle strictly in accordance with the instructions at the turn of summer and autumn this year, but after three months of treatment throughout the fall, her face was not rare. It can be seen that Meiya Freckle is completely ineffective. Which of the following? If true, the above conclusions can be weakened most. ['Meiya Freckle Freckle Obtained National Patent.', 'Meiya Freckle Cream has technical certificate.', 'Meiya Freckle Cream is a Sino-foreign joint venture, and the production quality is reliable.', "If you don't use Meiya Freckle Cream, there will be more melasma on Miss Li's face."]