Doen Solaris in Cream Wildflower Embroidery

Solaris in Cream Wildflower Embroidery In VGUC— some light discoloration (looked like self tan staining?) on the inside collar. I was able to get most of it out, but there’s a bit that still remains— please view the last three pics to see the residual staining. The staining is not at all visible from the outside. The only other thing to mention is that there’s a strong detergent scent from the last owner. Size medium 100% organic cotton