Vogmask Organic VM is certified cotton outer and inner layer with middle layer of VM particle filter for >98% of microscopic particles. The filtering efficiency depends on a good seal around nose and mouth.

From all the test result, N95 is good enough for filtering most of the PM2. 5 particles, but sensitive persons can consider using N99 version of those masks (N99 stands for filtering more the 99% of airborne particles).

Because the mask needs to sit on your skin for about 15 minutes, it might be more convenient to include it in your nighttime skin care routine. If you apply the mask in the morning, you can do so before getting in the shower, and then wash the mask off afterward.