Lady Gaga had been using many face masks on Instagram to give herself that added healthy glow to her look. However, do you guys know the science behind the products she uses for her skin (and lips)? Read below in today's Learning with Gaga! Collagen    The word collagen comes from the ancient Greek word κόλλα (kolla), which translates to “glue”.   In humans, collagen comprises one-third of the total protein, accounts for three-quarters of the dry weight of skin, and is the most prevale