Latanoprost/Xalatan

I recently did a Tricho hair test and after getting the results back started a topical solution of .0025% Latanoprost, 1% Argenine and 6% Melatonin. I use 30ml applied at night time. I was excited to try a non Minox/Fin solution to my hairloss. Its been only 5 days but yesterday someone mentioned that it looks like I have a bruise beside my eye. When I looked I could see there seems to be some darkening/hollowing on the lower corner of my eyes. Its subtle but I could see it too. I have been seeing my eyes hollowing previously since I'm getting older and from using 8% minox topical in the past.
I looked online and there is some evidence that Latanoprost when used for glaucoma or for eyelash growth at a strength of .005% can cause dark circles and in some cases change the color of peoples pupils. Im trying to figure out if I could suffer any of those side effects even though Im using a lower strength and only applying it to my scalp. Can the drug make it down into the eyes area? My eye hollows/darkening could be to general aging or the fact that Ive been doing a lot of cardio and getting leaner in my face. Would you advise me to continue using and see if things worsen or should I pull the plug. Any insights would be greatly appreciated
thank you