Supplements with too much Vitamin A can be toxic to the liver since Vitamin A is a fat soluble vitamin (meaning more gets stored than excreted.) Sweet potatoes and other foods rich in Vitamin A, however, do not cause liver toxicity and can not be stored for long-term use like supplements can.
The wound healing stages are made up of three basic phases: inflammation, proliferation and maturation. There are many types of wounds that require different wound care products for proper recovery from an ulcer or laceration, but most go through similar healing stages.
Burn Degrees. First Degree Burns: Damage is sustained on the top layer of the skin (epidermis). The burn area appears red and changes to white when pressure is applied. The burn usually takes 3-6 days to heal and usually heals on its own (sunburns etc.). Second Degree Burns: Both the epidermis and the layer underneath, the dermis are damaged. Second degree burns are classified into two types: superficial partial thickness or deep partial thickness burns.