Unprocessed 100% Virgin Brazilian Human Hair Guaranteed / 100 grams / 1 pack Hair wavy or straight /with cuticles 16" Black 1b can be colorized to your liking. We test hair strands of our unprocessed hair to make sure that it takes color immediately because if it does not its a good chance that it contains synthetic fibers or its been processed. Thanks for your interest in Zayn products.