Correcting that nicotinamide is false, the following are the ways to distinguish between true and false.

1, the font color on the front of the genuine packaging box is lighter, and the font color on the front of the fake packaging box is darker.

2. On the back of the packaging box, the lines of the unsealed logo cover on the back of the genuine packaging box are not sticky, while the lines of the unsealed logo cover on the back of the fake packaging box are sticky.

3. The color of the gasket in the cover is white, which means genuine, and yellow means fake.

4, bottle thread, genuine bottle thread end is thicker, fake bottle thread end is thinner.

5, dropper, the genuine dropper head is round, with amplitude on both sides, and the fake dropper head is wide. The amplitude on both sides is not obvious.