When it's cold, I will put baby oil and a coating of Vaseline on the combs. If it is RIDICULOUSLY cold...I put IcyHot and Vaseline on the comb. The trick is to increase blood flow to the comb to prevent it from freezing. Along with the increased bloodflow, the comb regains moisture. Once the moisture is gone...the comb has an increased chance of freezing off because there is little or no heat being exuded from the extremities.