The present invention describes stable topical barrier compositions comprising primary polyamines and uses thereof for protecting the skin from external stressors, for improving skin's moisture and fort stimulating healing of the skin. These compositions may be used in a variety of cosmetic and therapeutic applications including for promoting wound healing, for reducing or preventing the formation of hypertrophic scar tissue, for reducing or preventing skin irritation and inflammation, for increasing skin's moisture and/or for reducing or preventing skin's signs of aging.