Stretch marks are off colored skin lines that appear on stomach, thighs, arms and other body parts. Some conditions that cause stretch marks are pregnancy, sudden changes in weight, stress and rapid growth. Home remedies are very effective in curing this problem. Cut potato and rub it on the affected skin. Let it become dry and wash with warm water. Rub lemon juice on the skin and leave it for ten minutes. Wash the skin with warm water. Apply olive oil on the skin and massage the area. Warm the oil before using. You can do this remedy with castor oil also. Some other home remedies for stretch marks are as follows.