The real reason for hair loss lies beneath the scalp. So, whatever you apply to the hair strands does not cause hair loss. Nor do they cure it. That being said, if the hair spray comes in contact with the scalp and remains there for some time, it can damage the hair follicles. Hair loss happens when the roots become weak. If the scalp cannot get enough oxygen as a result of the hair spray clogging up the pores, it is very damaging to the hair follicles. So, if you take care not to spray near the scalp and wash the spray when you no longer need it, you don’t have to worry about hair loss.