Folic acid

Folic acid, also known as vitamin B9, plays an essential role in many body functions, including hair health. Although folic acid is best known for its importance during pregnancy and for preventing birth defects, it also has positive effects on hair growth and hair health.

How folic acid affects hair

  • Promotes hair growth : Folic acid contributes to cell division and DNA synthesis, which is necessary for the growth and repair of all cells in the body, including hair follicles . Adequate intake of folic acid can therefore help promote hair growth.
  • Preventing hair loss : Deficiency of folic acid can lead to reduced cell growth and impaired cell division, which can cause or worsen hair loss. Supplementing folic acid can help reduce hair loss by supporting the health of hair follicles.
  • Improving Hair Quality : Folic acid can also help improve overall hair quality by promoting healthier hair follicles, resulting in stronger and shinier hair.
  • Fighting premature graying : Some studies suggest that deficiencies in certain B vitamins, including folic acid, may be linked to premature graying of hair. Adequate intake of folic acid could therefore help counteract premature graying.

Sources of folic acid

To reap the benefits of folic acid for hair health, it is important to eat a balanced diet rich in natural sources of folic acid, such as:

  • Dark green leafy vegetables (e.g. spinach, kale)
  • Legumes (e.g. lentils, beans)
  • Nuts and seeds
  • whole grain products
  • Eggs
  • Citrus fruits


In some cases, supplementing folic acid in the form of vitamin supplements may be useful, particularly when a balanced diet is not sufficient to meet requirements or in certain health conditions that require higher intakes. However, it is important to coordinate the use of dietary supplements with a doctor or nutritionist to avoid overdoses and take individual health needs into account.


Although folic acid is just one factor among many that influence hair health, the connection between adequate folic acid intake and healthy hair growth highlights the importance of a nutrient-rich diet in maintaining hair health.

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