“Ferritin Face” Is Trending—But Can Your Skin Really Reveal Low Iron?

The latest skincare trend on TikTok is called "ferritin face." This refers to the belief that low iron levels, which can be identified through a ferritin blood test, leave visible signs on a person's face, such as dark circles under the eyes and pale or grey-looking skin. Some influencers claim that increasing their ferritin levels improved their complexion, but before jumping into blood tests or purchasing iron supplements, it's essential to understand the science behind this trend.

Ferritin is a protein that stores iron in the body, so a ferritin blood test actually measures how much iron a person has in reserve. Unlike iron, which can vary throughout the day, ferritin is a more reliable indicator of the body's iron stores. Iron is crucial for growth, immune function, energy production, and haemoglobin, the protein responsible for transporting oxygen around the body.

Due to its importance, the body tightly regulates iron storage. If someone has too little iron, they risk developing anaemia, a condition where the blood can't carry enough oxygen, which can be dangerous if left untreated. Some people are more prone to low iron levels than others, including pregnant women, those with heavy periods, people with inflammatory bowel diseases, vegetarians, and vegans. Symptoms of low iron include fatigue, weaker immunity, mouth sores, brittle nails, hair loss, and pale skin.

While there is a kernel of truth to the "ferritin face" concept, it's not the whole story. Severe iron deficiency, particularly when it leads to anaemia, can make someone look pale. However, several other factors can also cause a person to appear pale and tired, such as hormones, lack of sleep, stress, dehydration, or insufficient intake of key nutrients. A mirror cannot determine whether a person's ferritin levels are low; only a blood test can confirm this.

If a blood test reveals low ferritin, a doctor may recommend iron supplements. However, on social media, this message is often misinterpreted as "buy this supplement," and the distinction between medical advice and marketing becomes blurred. Some brands link their products to beauty, femininity, and body image to make a sale. Supplements have become a significant business on social media platforms, and there's a real risk that all this messaging encourages people to take more than they need.

Iron supplements can be harmful if taken in excessive amounts. Taking too much iron at once or over time can lead to toxicity, causing symptoms such as nausea, diarrhoea, low blood pressure, acid buildup in the blood, and even liver failure. If an individual is genuinely low on iron, focusing on diet is a better starting point than shopping at the supplement aisle.

Dietary iron comes in two forms: haem iron, found in red meat, chicken, and fish, which the body absorbs easily, and non-haem iron, present in lentils, leafy greens, oats, chickpeas, tofu, and fortified cereals, which is absorbed less efficiently. Pairing plant-based iron sources with vitamin C, found in citrus fruits, peppers, and orange juice, can enhance absorption. Tea and coffee inhibit iron absorption, so it's advisable to avoid consuming them alongside meals.

Most adults in the UK require around 8.7mg of iron daily, with women aged 19 to 49 needing 14.8mg. A balanced diet typically provides sufficient iron. For example, 100 grams of pumpkin seeds contain approximately 8.5mg of iron, while the same amount of beef offers around 2.5mg. If someone falls into a higher-risk category and experiences fatigue, hair loss, or unusual paleness, consulting a doctor is the best course of action. A ferritin test, along with other bloodwork, will accurately determine whether iron is the issue.