My eyelashes were fairly short and unimpressive before Latisse, and while Latisse has lengthened them, it has not darkened or thickened them to my knowledge. Latisse has also caused my lashes to be fairly brittle.I want to limit my Latisse use from daily to 4 times a week. Is it safe to use Castor Oil and/or Rapid Lash on the days I don't use Latisse? I think the issues started when I started using a fiber lash mascara, that's when I noticed breakage (but I fear I might have convinced myself)