I did not see "fibers".  This is more like a colored, powdered hair "shampoo" that DOES add body, and does NOT leave white residue like a dry shampoo.  That said, I like this product.  I have fine, thin curly hair that will droop if I use heavy products.  I have tried a lot of body-building hair products, and many are just too weighty  Even Frizz-eeze is not great for me. So far, this is a winner..