Perms and hair color. You can color hair that has been permed, but try to use a semi-permanent or 'no-ammonia' color instead of a normal permanent color (which uses ammonia and 20 volume peroxide). Have your hair permed first.
Mowing grass works best when the grass is dry, as grass tends to bend over from the weight of the rain, making it difficult to get a straight cut. It also clumps inside your mower cavity and on your lawn, which can lead to dead grass underneath the clumps if not raked promptly.
Experts suggest that you should never cut more than one-third of the height of your grass off at any one time. If your grass is very long, you shouldn't cut it very short in one mowing. If you want it short, you should cut off a third of its height, then wait until the next mowing to cut it shorter, working your way down to the height you want over time. Cutting off most of the height of the grass in one pass will shock the grass and may damage the root system.