If your nails have been damaged by dyes or harsh products, new nail growth should be a healthy, clear color. If your nails continue to be yellow, there may be something else going on in your body. Sometimes having yellow nails can be an indication of something more serious. Vitamin or mineral deficiencies can cause nails to appear yellow, and introducing a multivitamin supplement to your regiment may stop the problem.
Read more at: https://www.healthline.com/health/yellow-nails