5Headaches and Lightheadness Hairspray causes headaches and lightheadedness because when the hairspray dries it might drip down to your eyes and into your nose. Also the smell may be to strong and give you headaches. Also Hairspray can cause asthma attacks.
6Causes Resipiratory illness and dermatitis, also dandruff Also a chemical in hairspray called formaldehyde can cause such things as respiratory illness, and dermatitis. Hairspray If used to many times causes dandruff.