It’s entirely down to personal preference. The pollen blocking properties of each one are exactly the same.
That’s why lots of people seem to be going for a pack of three. Then they choose the one which best reflects their mood at the time. Keep one by the bed, one in the car, one in the office, and one in your pocket or handbag.
Otherwise, people choose according to the smell they like best and/or the commonly accepted properties of the oils. HayMax Pure contains no essential oils. It’s perfect for those who don’t like the smell of Lavender or Frankincense, or who are particularly sensitive.
Point to the tubs below and they will reveal more about each of the essential oils.
There are many books about aromatherapy oils that can give you more information –The Encyclopaedia of Essential Oils by Julia Lawless has been recommended to us.