A 45‑yeаr‑оld client cоmes tо the clinic concerned thаt their skin hаs developed a yellow‑orange discoloration, most noticeable on the palms of the hands and soles of the feet. The client reports consuming large amounts of carrot juice and squash daily for the past several months. Assessment reveals normal sclera with no yellowing of the whites of the eyes. Liver function tests are within normal limits. Which explanation by the nurse best describes the cause of this client’s symptoms?