Dynamint's action is natural, being a blend of many ingredients recognized for centuries as having therapeutic action. Peppermint oil is a stimulant and fly repellent. Eucalyptus oil is a stimulant and rubefactant. Calendula oil has a softening action, encouraging good, soft, supple skin condition and helps prevent chapping. Tea-tree oil is anti-microbial and acts as a skin cleanser.