1. Clothes with new ink stains or clothes soiled for a short time can be easily removed by soaking in hot milk or yogurt.
2. Generally, ink stains on clothes can be made into mixed solution with 1 part oxalic acid and1part water, heated, dipped with cotton balls in the hot state and carefully scrubbed. As soon as the ink mark disappears, rinse it off with a little warm ammonia solution.
3. Ink spots on wool and cotton clothes can be removed with 10% citric acid solution.
4. Formulation of ink detergent
(1) Mixing 96% alcohol, 10% ammonia and water at the ratio of 1:l: 1 can also remove ink spots. Ammonia will change the color of the fabric, so it is necessary to control the amount to avoid discoloration.
(2) Any one of insurance powder, bleaching powder or hydrogen peroxide can effectively remove the ink stains on white clothes.
(3) Ink stains on white clothes can also be wetted with tap water first, then with slightly hot mixed solution of 3% hydrogen peroxide and 10% oxalic acid, and then washed with clean water.
(4) For the blue-black ink stains on clothes, citric acid 1, distilled water 10 and concentrated borax solution 2 can be used as a remover. During preparation, citric acid is first dissolved in distilled water, then concentrated borax solution is added and mixed evenly. Dip this medicine with a brush and apply it to the blue-black ink spots on clothes, then use absorbent paper to absorb the excess solution, and then rinse with tap water after removing the ink spots.