It is subjective and depends on both the type of the thinning to hide and the frequency of use. On average, with daily use on medium sized thinning, a flacon lasts nearly 2 months. If the applications are not on a regular daily base, or the area is limited, a bottle can last for several months.
Hair Fibers can give skin transpiration problems?
Absolutely not. K-max is absolutely non-toxic and microfibers, even if very small, are very large if compared to the molecules that can cross the skin's pores.
How do I choose the color that best suits my hair?
Just refer to the color chart on the purchase page; Black color is suitable for those who have black hairy hairs, while the shades in the range of brown are very similar and represent only slight different gradations in brown tones. Auburn color have a light "reddish" component.