This is how you can find whether your 3-ply mask is real or not: First, by the visual test. As the 3-ply mask has three layers of protection: the outer layer is the translucent layer of hydrophobic non-woven fabric, then the middle white layer, and an inner soft absorbent blue, white or green layer. If you don’t find these three layers, then it surely is not a 3-ply mask. Next is with the help of a flammability test, in which you can burn the middle layer of the mask. If it melts then fine, but if it catches fire then it is not a 3-ply mask. Lastly, you can pour water on the outer layer of the mask and if you see that it repels water it is real since disposable masks are waterproof. But if the other side gets wet, then this is not a real one.