'Ferritin face' is trending—but can your skin really reveal low iron?

The latest skincare trend on TikTok is called "ferritin face," which suggests that low iron levels can leave visible signs on the face, such as dark circles under the eyes and pale skin. However, before jumping to conclusions or purchasing supplements, it's important to understand the science behind it. Ferritin is a protein that stores iron in the body, and a ferritin blood test measures the amount of iron in reserve.

Iron is crucial for growth, immune function, energy production, and hemoglobin, which carries oxygen throughout the body. While severe iron deficiency, especially anemia, can cause a pale appearance, low ferritin alone does not produce a distinctive facial look. Factors like hormones, sleep, stress, dehydration, or inadequate nutrient intake can also result in a pale complexion.

Only a blood test can accurately diagnose low ferritin levels. If the test reveals low iron, a doctor may recommend iron supplements, but social media often blurs the line between medical advice and marketing. Some brands claim that any skin concern can be solved with their products, linking them to beauty, femininity, and body image.

This can lead to overconsumption of supplements, which can be toxic in high doses. Natural iron sources include heme iron from red meat, chicken, and fish, and nonheme iron from plant-based foods like lentils, leafy greens, and fortified cereals. Pairing nonheme iron with vitamin C enhances absorption, while tea and coffee can hinder it.

Most adults in the UK require around 8.7 mg of iron daily, with higher requirements for women aged 19 to 49. A balanced diet typically meets these needs. If fatigue, hair loss, or unusual paleness are concerns, consulting a doctor for a ferritin test is the best course of action.