Trichorrhexis nodosa is a defect in the hair shaft characterized by thickening or weak points (nodes) that cause the hair to break off with ease. This condition contributes to the appearance of hair loss, lack of growth, and damaged-looking hair. Why? Genes can be a factor. External factors such as blow-drying, over-brushing, perming, or excessive chemical use, can … [Read more...] about Why Is My Hair Breaking? Trichorrhexis Nodosa Explained