Latisse action limited to where it is applied
The reason for the brush applicators is to allow precise application of Latisse just to the base of the lashes, and that is the only place where the skin may darken. If it is applied carefully, it will not spread this effect beyond the lash line. With blinking, some is transferred to the lower lash line, and darkening may occur here also.
The large blotchy darkening that is talked about is from patients who used Lumigan for glaucoma as an eye drop, which is the same medication. In these...