If a Tria Beauty coupon code isn't working, consider the following steps:
- Check the expiration date of the coupon code.
- Ensure the code is entered correctly, without any typos.
- Verify the terms and conditions of the coupon, such as minimum purchase requirements.
- Clear browser cookies and cache, then try applying the code again.
- Use a different browser or device to see if the issue persists.
- Contact Tria Beauty customer support for assistance.