Exhibit 15.1
April 29, 2026
Yatsen Holding Limited
Floor 39, Poly Development Plaza
No. 832 Yue Jiang Zhong Road, Haizhu District
Guangzhou 510335
People’s Republic of China
Dear Sir/Madam:
We hereby consent to the reference of our name under the headings “Item 3. Key Information—Permissions or Filings Required from the PRC Authorities for Our Operations and Offshore Offerings”, “Item 3. Key Information—D. Risk Factors—Risks Relating to Our Business and Industry—We collect, store, process and use a variety of customer data and information for analysis of the changing consumer preferences and fashion trends. The improper use or disclosure of data could have a material and adverse effect on our business and prospects.”, “Item 3. Key Information—D. Risk Factors—Risks Relating to Our Business and Industry—If we fail to obtain and maintain the requisite licenses, permits, registrations and filings applicable to our business, or fail to obtain additional licenses, permits, registrations or filings that become necessary as a result of new enactment or promulgation of government policies, laws or regulations or the expansion of our business, our business and results of operations may be materially and adversely affected.”, “Item 3. Key Information—D. Risk Factors—Risks Relating to Our Corporate Structure”, “Item 4.
