Sunburn Wash

Brew a cup of tea (or infusion)
3 parts Calendua
1 part green tea
1 part black tea
1 part chamomile tea.

When it cools, prepare for application by putting in:
Aloe Vera, freshly squeezed or distilled as an essential oil.
complimented by a couple drops of lavender and carrot seed oil (if you have it.)

Apply as a wash to the affected areas.

Also, baking soda is your friend.