From feedback on Amazon about RapidLash results it seems that you will get the absolute best benefit from using Rapid Lash if you use it every day for at least a month.
Some people have seen results quicker than this while others have used it for two months before they really began to see an effect. But what seems to be the case for most people is that it does actually work. It really does seem to have the ability to thicken and to lengthen eyelashes and eyebrows if applied every day for a number of weeks.
These are not false claims as we have a large number of reviews from people that have used it to really show that it does what it claims. If you do suffer from thin or short lashes then using RapidLash really may well be the absolute best way to get them to be thicker and longer as well.