Hair needs adequate nutrition, but a supplement cannot tell you why your hair is thinning. Genetics, illness, stress, weight change, medicines and nutrient deficiencies can all be relevant. If you are worried about hair loss, finding the cause is more useful than choosing the highest-dose beauty supplement.
Normal hair maintenance is a specific role
Biotin and zinc contribute to the maintenance of normal hair. That nutritional role is different from evidence that extra biotin or zinc regrows hair when you already get enough. A multi-ingredient formula should not be presented as a treatment for baldness.
Start with your usual food intake
Look at whether meals provide enough energy and a variety of protein foods, alongside fruit, vegetables and other nutrient sources. A restrictive diet or rapid weight loss can make assessment worthwhile. Do not assume all hair changes are caused by one missing nutrient.
More is not always better
Stacking a multivitamin, hair supplement and separate minerals can duplicate ingredients. High intakes of some nutrients can be harmful. Compare the complete daily serving, including micrograms versus milligrams, before adding a second product.
Biotin and blood tests
Biotin can interfere with some laboratory tests. Tell the clinician and laboratory that you take it, including the dose, before a test. Follow their instructions rather than choosing your own stopping interval.
When to get advice
Speak to your GP if you are concerned about hair loss, especially if the change is sudden, patchy or associated with other symptoms. Correcting a confirmed deficiency and treating a hair-loss condition are different decisions from buying a general food supplement.
