Yes, something like this product can most definitely be dangerous for a woman.

Every woman knows how delightful a handheld shower nozzle can be up against the clit. But these products are not designed to be used against a woman's clit,they are designed to be inserted.

"Just water" is harmful to a woman's vaginal lining. It strips away her natural moisture, increasing her chances of developing a yeast infection. It also makes her more susceptible to STD's. Additionally, these sprayers have considerably more water pressure than a douche, which could damage or bruise the cervix if the pressure is high enough.

I'll stick with my hand held showerhead thank you!