Although, of course, it is difficult to objectively assess the effect, it is necessary to focus on some indirect signs and sensations. As hair and nails did not notice anything, just the general condition has improved, however, to track the effect of taking the course should be longer, and, as there is already someone correctly pointed out in combination with B vitamins If my review was helpful to you, please click the Yes button below. Reviews of many other products, you can read on my page by clicking on my nickname. Enjoy your shopping!