pheros and newborns

Hi
I am quite concerned about the possible side effects of pheros ,to my newborn niece.

Does anyone have any idea as to whether she could be affected in any possible way ?
Allergies ? Bad reactions ? Skin allergies ?

Should I avoid putting any at least one day before seeing her ?
Cleanse with a special soap ?

Thanks

A plain old fashioned shower using a regular deoderant soap should be fine.