Use the salt wipe method (also detailed on the label):
1. Unroll your mat on a flat surface.
2. Sprinkle surface generously with coarse salt.
3. Let sit for 24 hours.
4. Remove salt with damp cloth.
5. Practice for a lifetime.
6. Repeat as needed.
Manduka also say:
“Much like a baseball glove, there is a break-in period for all PRO® Series mats. The more the mat is used, the softer and grippier the material becomes!
The break-in period varies from mat to mat since it is a textile and also because each yogi’s practice varies quite a bit. Typically, it takes about three months of daily practice and a bit of slipping during that time so that the friction of feet and hands break in the mat”.