Biotin, or vitamin B8, is arguably the most prominently featured ingredient in hair supplements. Does it deserve this central role? The answer is more nuanced than marketing suggests.
What Biotin Actually Does
Biotin is involved in the metabolism of fatty acids, amino acids, and glucose — processes essential to the proper functioning of fast-renewing cells like those in the hair follicle. The European Food Safety Authority (EFSA) officially recognises its contribution to the maintenance of normal hair, making it one of the few hair-care ingredients to benefit from an approved health claim.
Why Its Effect Can Be Disappointing
Here's the important point that's often overlooked: a genuine biotin deficiency is rare in the general population, since needs are covered by a varied diet, and some is even produced by gut flora. Supplementing with biotin when you're not actually deficient generally doesn't bring any additional, visible benefit to hair growth — which explains why some people notice no effect at all.
When It Makes the Most Sense
Biotin remains useful in cases of a genuine deficiency (certain restrictive diets, excessive consumption of raw egg white, which blocks its absorption, certain medical treatments), or when combined with other nutrients in a complete formula, rather than used alone at a high dose in the hope of a miracle.
A Practical Word of Caution
Biotin, taken at a high dose, can skew certain blood test results (particularly thyroid measurements). It's recommended to tell your doctor about your biotin intake before any blood test.
In Summary
Useful when there's a genuine need, more effective in combination than on its own, biotin deserves its reputation — but not the status of universal solution it's sometimes given.
Biotin is one of the active ingredients in our Vibrant Hair Vitamins, combined with other nutrients for complete action — details on the Ingredients page.
This article is provided for informational purposes only and is not a substitute for personalised medical advice. If in doubt, consult a doctor, dermatologist, or pharmacist.