4 tbsp. flour
1 tbsp. dry mustard
1/2 tsp. baking soda
Water or mineral oil

Mix together and add enough warm water or mineral oil so it's like the consistency of icing.

Spread this on 1/2 of small piece of material then fold other half of material over mixture.

Apply to chest area for 10 to 15 minutes. Remove and cover area with a warm cloth or towel.