... , 1kg/bag, or made as customer 's requirement 100% collagen powder abstracted from fish scales and fish skinMolecular Weight <1000Dal Our ... molecular weight is below 1000Da, It's easy and good for body and ski absorption.Continous taking collagen supplement, you will ... , e.g. fatigue, poor sleep, poor memory, prematurely senile3,Adapt for crowd of Skin roughness,much spots,wrinkles,poor elasticity,low ...