FOOD SUPPLEMENT FREE OF GLUTEN. For the health of the nails and hair, RE-COLLAGEN® contains MSM, bamboo silica, and ABC COMPLEX® (Amino Boost Collagen Complex), which is based on L-Glycine, L-Proline, and L-Hydroxyproline. One stick pack should be consumed each day, ideally at breakfast, either undiluted or diluted in a glass of water.