How can I effectively remove a cigarette stain from my clothing?

To effectively remove a cigarette stain from clothing, start by blotting the stain with a clean cloth to absorb excess residue. Then, apply a pre-treatment stain remover or liquid laundry detergent directly to the stain and let it sit for a few minutes. Wash the clothing in the hottest water safe for the fabric, and check the stain before drying. Repeat the process if needed before drying the clothing.