My nose is dry, sore and cracked because i blow it too often. how do i treat it?

Keep it moist: Use saline spray several times a day. The nose filter hairs, the cilia, like to be moist to function properly. When working well, the cilia sweep back particles of dust, pollen, allergens , bacteria and viruses so you can swallow them and kill them with your stomach acid, protecting you and cleansing the air heading into your lungs.