When you do mow your grass, wear a mask to filter out the pollen particles. When you are in your car, keep your windows closed and your air conditioning on re-circulate. At home keep your windows closed during peak hours of the day, and be sure to replace your heating/cooling air filters regularly. Obtain a High Efficiency Particulate Air (HEPA) filter.
Gray Hair and Baldness: Coconut oil is also beneficial for preventing baldness and gray hair. Try mixing Bhringraj or Eclipta Alba leaf juice with the oil and apply this on the scalp and hair. Coconut oil is widely available in the market.
This was my first foray into the world of oils. You can use coconut oil for a million different purposes, if you believe what the Internet tells you. Seriously though, it is great for oil pulling, dry skin and hair, and even for homemade deodorant. Personally I keep my jar of coconut oil around for my hair and my legs.