SHEIN's working promo codes are not entered at checkout. You type the code into the search bar inside the SHEIN app on a new account, and a coupon bundle appears for you to collect. Here's the exact process.
Install the SHEIN app and register a brand-new account. These codes surface bundles for new users only — on an existing account, nothing appears.
Tap the search bar at the top of the app's home screen. Not the coupon field at checkout — the main product search bar.
Enter the promo code exactly as shown (codes are case-sensitive — J43T3N2, not j43t3n2) and submit the search.
A coupon bundle banner appears — for example "New User Only / −60% / Coupon Bundle / Collect all". Tap Collect all while signed in, and the coupons land in your account's coupon wallet.
J43T3N2New-user 60% coupon bundle (new accounts only)3QRAJNew-user 60% coupon bundle (new accounts only)LY573New-user 60% coupon bundle (new accounts only)XHF5UK8$115 new-app-user gift bundle (new app users only)Full per-code details, check dates, and the fine print: SHEIN promo codes guide.