Hair spray is sticky -- that's why it holds your hair in place, and it's also why you have a hard time getting it off the floors and walls of your bathroom. You can usually dissolve it with a solvent, but if your floors are laminate, you should test all solvents first; some may dull the floor finish.
The sticky ingredient in hair spray is polyvinylpyrrolidine; it's used in the lamination of plywood layers, so it's not surprising that it's sticky. Most hair spray products also contain alcohol, which is the first solvent you should try. If you discover that it isn't safe, one of a number of alternatives will probably do the job.
Procedure for Removing Hair Spray
Step 1 Clean With Alcohol
Dampen a cloth with isopropyl rubbing alcohol and rub an inconspicuous part of the floor -- perhaps under a cabinet toe kick -- to test for dulling. You shouldn't see any, because alcohol won't damage most laminate floor finishes, but if you do, put the alcohol away. If alcohol is safe, use the cloth to rub off the hair spray. You may have to dampen the cloth more than once to get all the tackiness off the floor.
Step 2 Use a Different Solvent
Rub the area with dry-cleaning solvent or citrus cleaning solvent. Both are safe for most laminate finishes, although you may have to work harder to get the hair spray off.
Step 3 Try Other Alternatives
Mix a teaspoon of dish detergent with 2 cups of warm -- not hot -- water and scrub the affected part of the floor with a rag. Keep the rag damp, but not wet, and rinse and dry the area as soon as you've finished scrubbing. Substitute a solution of 1 tablespoon of hydrogen peroxide from your medicine cabinet with 3 tablespoons of warm water -- if desired -- and follow the same procedure.