Key Takeaways

• Trybello, Cosnori, and Nanolash differ majorly in approach: Trybello and Cosnori work through peptides and hydrating plant extracts, while Nanolash uses a prostaglandin analog.
• Trybello is $39.95 for a serum-and-mascara dual-tube, Cosnori costs $22.43 for 0.3 oz at Olive Young, and Nanolash is $59.00 for 3 ml.
  
• Trybello and Cosnori suit contact lens wearers and users with sensitive eyes, while Nanolash publishes age and pregnancy restrictions tied to its prostaglandin formula.
  
• Trybello offers visible results in four weeks; Cosnori lists two to four weeks depending on the retailer, and Nanolash claims up to 50% longer lashes in 30 days.
• Trybello pairs its growth serum with a volumizing mascara in one tube, backed by a 60-day growth guarantee and free shipping on every order.

Choosing Between Trybello, Cosnori & Nanolash

Trybello, Cosnori, and Nanolash take three different routes to longer lashes, and the right pick depends on how your eyes handle the active ingredient, not price alone.

Nanolash relies on a prostaglandin analog. This class extends the lash growth phase, which supports the brand's 30-day length claim, but it also explains the age and pregnancy restrictions Nanolash states on its own listings. Buyers weighing this formula should read these conditions before ordering.

Trybello and Cosnori avoid prostaglandins. Both work through peptide signaling supported by hydrating agents, producing slower visible change and removing the pigmentation and irritation risks attached to prostaglandin formulas. Our Trybello formula is additionally free from oils, hormones, silicones, parabens, perfumes, and PEGs, and is gluten-free and fragrance-free. This makes it ideal for people with sensitive eyes and anyone planning long-term daily use.

"100% Natural Serum Delivers Visibly Longer, Fuller Lashes in Just 30 Days. The Safe Alternative to Extensions!"

Transform your lashes naturally with our plant-based formula, rated 4.8/5 by 40,000+ real customers, free from oils, hormones, silicones, and harsh chemicals.

Proven Natural Ingredients

• ✓ Panax Ginseng – Revitalizes follicles for accelerated growth
• ✓ Pumpkin Seed Extract – Restores and strengthens natural lashes
• ✓ Grape Seed Extract – Reduces breakage for fuller lashes

Clean Beauty You Can Trust

• ✓ Gluten-free, fragrance-free, no parabens
• ✓ Works on upper, lower lashes & eyebrows

60-Day Guarantee: No results? 100% money back.

Get Trybello Eyelash Growth Serum 🌸

Trybello 2-in-1 Eyelash Growth Serum + Mascara Dual Wand

Our Trybello formula list includes purified water, pumpkin seed extract, grape seed extract, Panax ginseng extract, Swertia japonica extract, Pentapeptide-17, hyaluronic acid, vitamin E, biotin, and panthenol.

Panax ginseng supports follicle activity. Pumpkin seed extract helps restore natural lashes. Grape seed extract targets breakage. Biotin, panthenol, and hyaluronic acid round out the formula as conditioning and hydrating agents.

The dual wand carries the growth serum on one end and a volumizing mascara on the other, placing lash treatment inside an existing makeup routine rather than adding a separate step. Our users often see noticeable results in four weeks with consistent daily use, and as a US-based startup, we offer a 60-day money-back guarantee.

Trybello's dual wand integrates a peptide-and-botanical lash serum into a daily mascara routine, with results in four weeks.

Cosnori Long Active Eyelash Serum

Cosnori is a Korean lash and brow serum sold through Ulta, Costco, and Olive Young. The formula combines patented peptides, hyaluronic acid, and Centella asiatica in an oil-free, pH-balanced base that the brand describes as gentle enough for daily use, including on lash extensions. The named peptides are Myristoyl Pentapeptide-17 and Copper Tripeptide-1.

The applicator carries a precision ball tip for the lash line and a C-curled wand that coats each lash from root to tip.

Stated timelines differ by retailer. Ulta's listing claims results in two weeks, while Costco's listing for the same product cites four weeks of daily use.

Cosnori's peptide-based lash serum is sold at Ulta, Costco, and Olive Young, with retailer timelines ranging from two to four weeks. (Image courtesy of Cosnori)

Nanolash Eyelash Serum

Nanolash lists nine ingredients: Aqua, Ethyl Tafluprostamide, Euphrasia Officinalis Extract, Propylene Glycol, Sodium Chloride, Alcohol, Phenoxyethanol, Citric Acid, and Triethanolamine. Ethyl tafluprostamide is a prostaglandin analog that extends the hair growth phase and helps prevent breakage.

The brand claims lashes up to 50% longer after 30 days, with first changes visible after two weeks. Once you reach your target length, the advice is to reduce use to two or three times weekly to maintain results.

The product is marked for ages 18 and over and should not be used on children or during pregnancy or breastfeeding. The serum holds its properties for 12 months after opening.

Nanolash's prostaglandin-based serum claims up to 50% longer lashes in 30 days, with a maintenance schedule once results are reached. (Image courtesy of Nanolash)

What Each Serum Costs

Trybello Eyelash Serum sits at $39.95, reduced from $49.95, with free shipping on all orders. Because the mascara occupies the second end of the tube, that figure covers two products rather than one, making it a more useful comparison against a standalone serum plus a separate mascara purchase.

Cosnori is the lowest outlay of the three. Olive Young US carries the product at $22.43 for a 0.3 oz tube, and Costco sells a two-pack that lowers the per-bottle cost further. Nanolash serum costs $59.00 for a 3 ml tube.

Customer Reviews

Trybello

Trybello Cosmetics products hold 4.8 out of 5 across more than 40,000 customers, and the lash reviews cluster around two points: comfort and visible growth. Verified buyers on the 30-day supply describe the dual wand as easy to handle, with lashes growing and no reaction to the serum on the lash line.

Tolerance comes up often because the formula is prostaglandin-free, so reviewers report none of the stinging or eyelid darkening tied to that ingredient class. Users applying morning and evening report seeing a difference sooner than once-daily users, and several describe lashes thinned by long-term extension wear returning to full condition.

Verified Trybello reviewers on the 30-day supply report growing lashes and no reaction to the serum.

Cosnori

Cosnori holds 4.7 from 3,841 reviews at Olive Young US. Ulta's smaller marketplace listing shows 4.9 from 14 reviews.

Some reviewers say the formula doesn't burn even with accidental eye contact, while others warn that it does sting and advise using the ball tip carefully. Olive Young states the serum completed a clinical trial and won Olive Young Awards for three consecutive years.

Cosnori holds 4.7 from 3,841 reviews at Olive Young US, and 4.9 from 14 Ulta reviews.

Nanolash

Marketplace feedback skews positive. Nanolash holds 4.5 from 46 eBay product ratings, with most of those at four or five stars. Reviewers describe thicker, darker lashes after consistent use; however, one user noted no visible results after three weeks, suggesting results vary by individual.

Nanolash holds 4.5 from 46 eBay product ratings, with most of those at four or five stars.

Trybello vs Cosnori vs Nanolash: Comparison Table

Trybello Fits Lash Growth Into Your Daily Facial Routine

Trybello's prostaglandin-free 2-in-1 serum and mascara fits lash growth into your daily makeup routine at $39.95.

The decision between these serums comes down to what you are willing to trade. A prostaglandin formula moves faster but narrows who can safely use it, while peptide-based serums work gradually and stay open to sensitive eyes, contact lens wearers, and long stretches of daily use.

We built our Trybello 2-in-1 serum prostaglandin-free and placed it in the same tube as a volumizing mascara, priced at $39.95 with free shipping. Our 60-day growth guarantee gives you a full cycle to judge the results, so order yours and start today.

Frequently Asked Questions (FAQs)