Banana peel and hair straightening: why this viral method doesn’t work as promised

Social media is full of videos promising straight and shiny hair thanks to an “ancient Japanese method” based on banana peels. Although bananas contain beneficial nutrients for the hair fiber, no scientific evidence validates this viral technique. The observed smoothing effect is explained by temporary hydration that reduces frizz, without permanently changing the natural texture of curly hair.

On TikTok and Instagram, an “ancient Japanese method”…