Winter time lip problems

Tara • Have two beautiful children
My SO works on a Christmas tree lot every year. About a week after the lot starts, his lips become so very dry and he picks the dry skin off (gross I know) and then it scabs over. How can he prevent his lips from drying out that bad?!?!?! He keeps licking his lips and I told him to stop but he says he can't help it. How to help with lip dryness please!