The effect is not bad. You don't have to worry about that. The most important thing is to learn to distinguish between true and false. Four things can be judged. 1 is colored, light yellow or white, like A4 paper. The second is to judge the taste. Drinking it carefully is a bit sweet, because it is made of deep-sea fish. The third is to see its solubility. Pure collagen powder can be quickly dissolved in boiling water. I forgot the fourth one. I'll ask the teacher later. But generally speaking, if the first three conditions are met, then 95% are genuine, so don't worry.