'Ferritin face': are social media claims about iron deficiency fact , or fiction?

Experts say symptoms such as dark circles under the eyes, grey skin, cracked lips and hair loss can be a warning sign , but there are other factors too TikTok is rife with influencers warning of "ferritin face", a term they use to describe the pallor, dark circles, dry skin, and hair loss claimed to indicate low iron stores. But is this based on fact or fiction, and when is it time to head to the GP?