At the beginning of the year, I started yet another lash serum on my quest to find the best prostaglandin-free serum. Last year I tried the Ordinary Lash Serum and had pretty decent results, but I wanted to see if there was something better out there! The Terez & Honor Eyelash serum was going viral on TikTok and for under $25, I figured it was worth a shot!

I have previously used an expensive lash serum that I [admittedly] saw amazing results with; however, that lash serum contained prostaglandin analogs. In finding a new lash serum I wanted one that wasn’t going to cause me to file for bankruptcy, avoid prostaglandins and their analogs, and actually do something for my lashes.

Prostaglandin Analogs in Lash Serums

In the past, I have used the Rodan & Fields Lash Boost serum, that I saw amazing results with (although it did give me some eyelid redness); however, I came to learn that it uses a prostaglandin analog. Currently, the only FDA approved lash growth serum on the market is Latisse (which you can obtain through prescription). Latisse contains bimatoprost, a prostaglandin analog which is FDA approved. Most over-the-counter lash serums contain another prostaglandin analog, isopropyl cloprostenate, which is NOT FDA approved.

So why was I on the hunt for a lash serum that did not have prostaglandin analogs? A couple of reasons:

1. Women who are breastfeeding or pregnant are advised to avoid using products with prostaglandins or prostaglandin analogs. I’m not currently either, but when I initially started searching for one, I was still breastfeeding my son.
2. When I was using the Rodan & Fields Lash Boost serum, I occasionally got a bit of redness and discoloration along my lash line. It was never severe, and after I would stop using for a few days, it would go away. But it bothered me enough that it contributed to me not wanting to continue using the product. This video from a dermatologist shows how this is a known side effect of lash serums containing prostaglandin analogs:

@dermdoctor CAUTION WITH EYELASH GROWTH SERUMS @bouje elephant #dermdoctor #eyelashgrowth #eyelashserum ♬ Keep Dat Clean Radio Edit By iCandy – Soap Radio. 🧼

3. I feared I was losing orbital fat due to lash serum. I already have dark circles around my eyes and kind of sunken eyes. Latisse is more-so known to be associated with orbital fat loss; however, I decided it wasn’t worth the risk. Here is a video with a good explanation of orbital fat loss and lash growth treatments:

@drdrayzday #stitch with @Devon Kelley lash growth serums have prostaglandin compounds, similar to bimatoprost in Latisse. They can cause similar side effects, including eyelid irritation, hyperpigmentation, & eye color changes. Orbital fat atrophy has been reported with bimatoprost for glaucoma, but is rare & not common with lash or brow serums. The few cases that occur in those using bimatoprost for glacima are typically reversible once stopping or switching to a different medication. #lashserum #lashgrowthserum #orbitalfatloss #dermatologist ♬ original sound – Dr Dray | Dermatologist

Does Terez & Honor Lash Serum contain prostaglandin analogs?

Nope! According to their Amazon listing, they claim not to use prostaglandins and that they use peptides as their main ingredients.

It also scores 100/100 on the Yuka app.

Terez & Honor Lash Serum Results

After using consistently for 5 months, here are my results using the Terez & Honor Lash Serum:

Before (January 4, 2025)

After (June 4, 2025)

Thoughts on the Terez & Honor Lash Serum

I liked the applicator for this lash serum a lot more than I liked the Ordinary one. It has a more precise tip and it is softer. The actual serum itself seemed more watery than I remember the Ordinary one being, which isn’t the best, as it can run into your eyes easier and made mine burn.

As far as whether or not I like The Ordinary Lash Serum or the Terez & Honor one more is hard to say. When I compare the before and after photos I think I had a more drastic lash growth with the Ordinary One. However, I liked the applicator much more on the Terez & Honor one. For price comparison, currently the Terez & Honor one is under $25, and the Ordinary is under $15. Therefore, so far in my quest to find the best prostaglandin-free lash serum, the Ordinary is my favorite!

If you enjoyed this post, you may enjoy this one reviewing the Ordinary Lash Serum:

The Ordinary Lash Serum Review (Honest and Unsponsored)

While this post is not sponsored, nor did I receive free product for this post, this post does contain affiliate links. Please see policy page for more information.