Have someone pour the teaspoon of olive oil and the same amount of salt into the palm of your hands, or do so yourself (be aware of the potential mess). You can use any brand or type of olive oil that you might have laying around the house. The salt can be just your standard table salt that everyone has in their home. This combination is ideal for breaking down the grease from your hands effectively.
Rub the mixture as well as you can into your hands, working the solution between your fingers. Be sure to rub your palms together as well as to spend time scrubbing the back of your hands with the palm of the other as needed. Take your time while doing this as you want the olive oil to break up the nasty grease on your hands. This can take a few minutes so be sure that you thoroughly rub the olive oil on you hands and cover them completely.
Wash your hands well with soap and water. Be sure to once again rub your hands together well and use the soap water to remove any dirt that may remain from your fingers and hands. Make sure you use plenty of soap to clean your hands effectively. You can also use a small brush to scrub under your fingernails if you have grease stuck there as well. Remember to take your time and not to rush anything as grease can take some time to come off.
Use a clean towel to dry your hands. You will notice that not only are they clean, they are moisturised as well. If you feel that you might have missed a spot then you can repeat the process after a few minutes as you do not want the skin on your hands to get wrinkled.