Brief Answer:
Safety not established. May affect the hair by corroding them.

Detailed Answer:
Thanks for asking on HealthcareMagic.

I have gone carefully through your query and understand your concerns. However, I would need you to clarify whether you seek to know the possible adverse effects on the hair strands or whether you want to know the overall health hazards of such hair sprays.

Let me remark that the hair are made from deposits of keratinous material. The hair are not living. They do not grow. The growth occurs at hair follicles from which the hair arise. The hair sprays can block the openings of the sebaceous glands that secrete the oily secretions that make our hair shiny. Application of such hair sprays can therefore lead to the hair appearing dry and lustureless. Otherwise, the strength of the strands would remain unaffected. However, if you talk about safety, I would need to say that adequate number of studies are absent which could establish the safety of such medications/chemicals.

Let me know if I could help further.

Regards

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