Sometimes, after the first unrolling of a yoga mat, some residue can be left on the mat from the factory. If you use it right away, you may find that your excellent is slightly slippery due to this residue. When unrolling your mat for the first time, the best thing is to give it a quick wipe-over with the same vinegar-to-water mixture we recommend above in the cleaning process. This will ensure the layer of residue is removed before use, and your mat will be at a full-grip potential.