Obagi Lash Serum Review: Real Results After 12 Weeks (Before & After)
If you’re tired of sparse, thin, or brittle lashes, you might have come across the Obagi Nu-Cil® Eyelash Enhancing Serum. This serum has been making waves in the beauty industry, promising fuller, longer, and healthier-looking lashes.
But does it really work? I decided to put it to the test and document my results after one month of consistent use. Here’s everything you need to know!
What is Obagi Nu-Cil® Eyelash Enhancing Serum?
Obagi Nu-Cil® Eyelash Enhancing Serum is a clinically-backed formula designed to improve the appearance of thinning lashes.
Powered by Nouri-Plex® Technology, this blend of ingredients supports fuller, denser, and healthier eyelashes over time.

Key Ingredients & Benefits:
- Biotin – Supports the natural production of keratin, a vital protein for strong, healthy lashes.
- Proprietary Lipid Compound – Helps improve the appearance of thinning lashes.
- Sodium Hyaluronate – A form of hyaluronic acid that hydrates and boosts lash thickness.
- Panthenol (Vitamin B5) – Conditions and enhances lash texture for a softer, more supple look.
The serum is easy to apply, and according to Obagi, results can be seen within 8-12 weeks. But is it worth the hype? Let’s dive into my experience!
My 1-Month Journey with Obagi Nu-Cil® Eyelash Enhancing Serum
Week 1: Getting Started
Application was simple:
- I cleansed my face and ensured my eyelids were completely dry.
- I applied a thin layer of the serum to the base of my upper lashes.
- I waited 90 seconds for it to dry before using any other skincare products.
Initially, I didn’t see any major differences, which was expected. However, I did notice slight tingling around my lash line.
Week 2: Small but Noticeable Changes
By the second week, my lashes looked a bit more conditioned. While I didn’t see any drastic length improvement yet, they felt stronger and less prone to breakage.
Week 3: Visible Growth
Here’s where things got exciting. My lashes looked noticeably thicker, and I could see new lash growth in areas that previously looked sparse. My mascara also applied more evenly.
Week 4: Fuller, Longer Lashes!
By the end of the month, my lashes had improved significantly! They appeared:
- Longer: I didn’t need as much mascara to create a dramatic look.
- Thicker: The density of my lashes had noticeably increased.
- Healthier: They felt softer and stronger, with less fallout.
Clinical Trial Results: Does Science Back It Up?
Obagi conducted a 16-week blinded study, and the results were impressive:
- 93% of participants saw an improvement in lash appearance.
- 89% reported their lashes looked thicker and more densely packed.
These stats aligned with my personal experience. If you commit to using the product consistently, you’re likely to see impressive results.
Also Read: Epicutis Lipid Serum Reviews
What Other Users Are Saying
Redkat05 (25-34 years old) – Reston, VA
“I started using this after removing my lash extensions, and my natural lashes now look like falsies! It took about 2.5 months, but the difference is amazing.”
Altonkaren (55-64 years old) – New Hampshire
“My lashes were thinning due to aging, but after a couple of months, they’re longer than they were in my younger years!”
Diana (65+) – Vacaville, CA
“After stopping my lash extensions, my lashes were in horrible shape. Within 10 weeks, they were back and thicker than ever!”
BLLM (45-54 years old) – Cameron, NC
“It worked so well that my lashes were hitting my glasses! I had to cut back to using it only three times a week.”
Before & Afters



How to Use Obagi Nu-Cil® Eyelash Enhancing Serum Correctly
To maximize results, follow these steps:
- Start with a clean face – Remove all makeup and let your skin dry completely.
- Apply a thin line of serum to the upper lash line (not the lower lash line).
- Wait 90 seconds before applying other skincare products.
- Use it consistently – Apply daily for the best results.
Important Notes:
- Do NOT apply to lower lashes. It can lead to unwanted hair growth in unintended areas.
- Be patient! Full results take 8-12 weeks.
- Store at room temperature (59°F-77°F).
FAQs
How long does it take to see results?
Most users notice improvement within 4-6 weeks, with full results in 8-12 weeks.
Can I use it on my eyebrows?
It’s designed for eyelashes, but some users have applied it to their brows with success. However, always consult your doctor first.
Does it cause any irritation?
Some users experience mild redness or irritation, which usually subsides. If irritation persists, discontinue use and consult a physician.
Is it safe to use with eyelash extensions?
Yes! It can help strengthen your natural lashes, making them a great companion to lash extensions.
Will my lashes go back to normal if I stop using it?
Yes, just like with other lash serums, your lashes will return to their natural state once you discontinue use.
Final Verdict: Is It Worth It?
After testing the Obagi Nu-Cil® Eyelash Enhancing Serum for a month, I can confidently say yes, it works! My lashes appeared longer, denser, and healthier.
While the full effects took about 8-12 weeks to show, even one month in, I saw a noticeable difference.
Pros:
✔ Clinically proven formula
✔ Noticeable lash growth
✔ Strengthens and conditions lashes
✔ Easy application
Cons:
✖ Some users may experience mild irritation
✖ Results require consistent use
✖ Pricey compared to other lash serums
If you’re looking for a high-quality, clinically-backed eyelash serum that actually delivers, Obagi Nu-Cil® is a fantastic investment. Would I repurchase? Absolutely!