I've been using lumigan for 5 weeks. How much growth should I expect at this point?

Lumigan and Latisse are indicated for different uses. Latisse is used for growth of eyelashes where as Lumigan is not. Latisse should be used every evening for 3 months to see fuller, thicker lashes. You may notice a difference before or after 3 months depending on where your eye lashes are in the growth cycle.

Although Lumigan and Latisse both contain the same active ingredient, Lumigan is formulated for use as eye drops (for glaucoma) and Latisse is formulated for topical application to the eyelid for eyelash growth. For that reason, they are not the same and should not be substituted. 

Some improvement in eyelashes can occur with Lumigan but the FDA approved concentration is 0.03  % (which is marketed as Latisse).Using Lumigan instead of Latisse, there is a bit more uncertainty on "how much" improvement you'll get and "when" you'll see changes.You'll like have more improvement by 12-16 weeks. However, if you're not getting the results you want, be sure to speak to your physician about bimatoprost 0.03 % (which is sold as Latisse)

Please use Latisse as directed. Apply Latisse to the top lids only, close to the lash line. Use the applicators that come with the Latisse package - these applicators are sterile and clean. Do not re-use the applicators.You will start to see effects in lash length at about 4 weeks. Sometimes a few hairs fall out in the beginning of treatment because your hairs start a new growth cycle. Full effects should be seen at about 16 weeks with daily use. I hope this helps!

Latisse (not Lumigan) should be applied daily to the top eyelids only. You will start to see some small length change at about 4 weeks, but it takes a full 16 weeks of daily use to see full results in length, thickness, and darkness. "This answer has been solicited without seeing this patient and
cannot be held as true medical advice, but only opinion. Seek in-person
treatment with a trained medical professional for appropriate care."