Washing a grapefruit can make it more attractive, not to mention healthy. Choose some nice fresh ones
Take some water in a large bowl and dip your fruit in it. Keep it soaked for some 5-8 minutes to soften the dirt.
Use a soft brush and start cleaning the zest (outer rind) on the fruit. (Don't rub it hard!)You can use a little dish-washing-detergent to help cleaning, very little quantity or else your fruit will smell like that.# Using a soft cloth or towel, dry your fruits.
Apply a very little cooking oil on a piece of cloth and rub it gently on the fruit. That will make it look more shiny (don't apply oil or they will look bad while touching).
Decorate them in a plate or a fruit basket.
Choose fruits of good shape and color, if you want to serve them.
You can use this method on other fruits as well. Only some fruits don't need much soaking.
Don't use large quantity of detergent or oil on fruit.