Yes, it helps in removing dog hair from car. While most of the solutions might show harsh effects on the car fabric or material, the fabric softener, as the name implies, is very soft in its approach. The chemicals and ingredients that loosen the hair that remain stuck in the car upholstery help remove those strands gently. You can prepare the solution by mixing 2-3 teaspoons of fabric softener with water. You just need to spray the solution and wipe the hairs using a paper towel. This is how to remove dog hair from car using the fabric softener.