With a first-degree burn, only the top layer of the skin is burned.
Symptoms include:
• Redness
• Skin is painful to touch
• Minor swelling
• Dry skin
• Pain usually lasts 48 to 72 hours
• Possible skin peel
The first-degree burn generally heals on its own and takes three to six days to completely heal. Also, the burned skin may peel away in 24 to 48 hours after the initial burn. This will leave a very thin layer of skin which will be red and very sensitive to touch.
First-degree burns need to be treated quickly. Quick treatment reduces the temperature of the skin and damage to the burn area.
Do not apply ice to a first-degree burn. Ice can cause additional damage to the skin. Never apply powder, butter, grease, or any other ʺurban legendʺ remedies to a first-degree burn. These old wives' tale remedies can further irritate your skin and cause a skin infection.
https://www.empowher.com/burns/content/first-degree-burn-symptoms-and-treatment