Lower your skin temperature:
A handy way to reduce sunburn redness from your skin is to lower the skin temperature. You can do this easily.
Freeze a full cup of milk with a wooden stick placed in the centre of the cup to prepare a milk popsicle. Gently rub the milk popsicle on the sunburn affected areas of your body. This will help lower your body temperature, reducing redness and inflammation to a certain extent. Do not wipe the milk. Instead let it dry. After the milk dries, you can take a cool water shower.
Take a soothing bath:
Another very effective way to reduce redness caused from sunburn is to take an oatmeal water bath.
Add a cup of colloidal oatmeal to a bath tub full of lukewarm water. If you do not have oatmeal at your disposal, you can use a cup of ground rolled oats instead. Stay in the bath tub for a period of about thirty minutes, continuously splashing your face with the oatmeal water. Dry off gently using a soft towel.
Bathing in oatmeal water has a soothing effect and helps reduce redness because oatmeal has anti-irritant and anti-inflammatory properties.
Use shaving cream:
Most shaving creams have cooling agents as an ingredient. Gently apply a uniform layer of shaving creams on the sun burnt parts of your body. Leave it on for sometime. Gently wipe the shaving cream off using a tissue paper. Do not rub your skin rigorously to remove the shaving cream.