There are many home remedies.
1. Drink enough water. If you are from the tropical countries, 2.5-3 litres a day
2. Pure coconut oil helps to remove marks and scars. If you have oily skin wash it frequently
3. Turmeric along with cream of milk or any other emolient may be helpful
Test and see which one suits you better
Do it for long term to get desired results.