Self Guide

The video blends real, useful habits — a mild shampoo, avoiding hot water and hot air, not over-washing — with a shakier nutrition promise: that eating more protein, biotin, and zinc "grows" hair. A 2026 systematic review (MDPI) and a PMC review both conclude biotin shows no consistent benefit outside documented deficiency, and true biotin deficiency is rare on a normal diet. Zinc is a bit different: several studies find lower serum zinc in people losing hair, and supplementing the deficient produces clinical improvement — but there's no good evidence for people who aren't deficient. Protein follows the same pattern: protein malnutrition genuinely causes hair loss, so the underlying dietary advice is sound, but there's no proof that adding more protein past your needs speeds growth. The most solid habit in the video is also the simplest one: a clean scalp and a gentle routine, minus the heat.