Hydrolyzed Collagen - Is also known as collagen peptides. This is collagen that has been broken down into more easily dissolvable amino acids, and often available as a collagen powder dietary supplement.

Collagen uses the amino acids in to build hair proteins and strengthen the skin that contains your hair roots. It may also prevent hair follicle damage and greying. 

Other benefits: Helps to improve skin health, relieve joint pain, prevent bone loss, boots muscle mass,  promotes heart, brain gut health, and last but not least weight loss and a faster metabolism.