Is it possible to overdose by applying the Caffeine Tonic multiple times a day (e.g. in the bathroom in the morning and after exercising at night)?
No, the quantity of caffeine absorbed via the hair sheath and the scalp corresponds to about one half cup of coffee. This is completely safe even for people who react sensitively to caffeine. In addition, the active ingredient is applied locally to the scalp; the quantities distributed over the body from there are negligible.