1x Glass Jar Collagen Powder 100g 1x Refill Bag Collagen 300g Miracle Collagen contains bioactive collagen peptides with a specific molecular weight of 2kDa, clinically shown to stimulate the skin cells to produce more collagen and strengthen the hair and nails. Add 2.5g - 5g (approx. 1-2 metric tsp) to any liquid and stir to dissolve. Take up to three times a day for accelerated benefits. We recommend purchasing the sustainable Miron glass jar + compostable refill bag as a set. Keep your glass jar, and refill it with the compostable refill bag.