It is effective for treating rare biotinidase deficiencies or conditions like "uncombable hair syndrome".
Biotin (Vitamin B7) is a popular supplement primarily marketed for strengthening hair and nails. While many users report positive aesthetic changes, scientific evidence suggests its benefits are mostly limited to individuals with an actual biotin deficiency. biotin
Scientific reviews indicate that biotin is highly effective for those with a deficiency, but there is little clinical proof that it improves hair or nail health in healthy individuals. It is effective for treating rare biotinidase deficiencies