Nailplex Pen · Nano Keratin Complex
Strength, engineered.
Precision care for nails that break, peel, and split.
01 — The problem
When the nail's structure breaks down.
- Surface stress
- Dehydration
- Layer separation
- Breakage
Keratin layers that lose moisture and cohesion begin to lift and separate. What looks like peeling or splitting is structure coming apart, one layer at a time.
02 — The mechanism
Apply precisely.
Support the nail's structure.
Help defend against everyday breakage.
Nano Keratin Complex
Our hydrolysis process creates keratin molecules designed to be up to 4× smaller than average keratin molecules.*
*Use only if this claim is supported by PharmaBlue Labs' substantiation, testing, and applicable advertising requirements.
03 — The technology
Smaller molecules. Deeper care.
Hydrolyzed for precision.
Nailplex Pen uses a hydrolyzed keratin complex engineered for a refined molecular profile—made to support the look and feel of stronger, healthier-looking nails.
- 01Precision pen application
- 02Clear, lightweight finish
- 03Designed for daily nail-care routines
Conventional
Average keratin
Nailplex
Nano Keratin Complex
Illustration for educational purposes; not to scale.
3 ml · 0.10 fl oz
04 — Nailplex Pen
Your daily ritual for stronger-looking nails.
- Supports the appearance of stronger nails
- Helps improve the look of peeling and splitting
- Odorless formula
- Formaldehyde-free
- Paraben-free
- Made in the USA
How to use
05 — Nailplex Shield
Protection, made visible.
Complete your nail-strengthening ritual with Nailplex Shield. A 15 ml brush bottle for your nightly routine—the protective partner to the Pen.
The system
Nailplex System — Pen + Shield
The Pen goes in your bag for the daytime. The Shield lives on your nightstand. Six weeks is easier to finish when you have both.
06 — Proof
Made for consistency.
Nails grow slowly, so we designed a routine you can actually keep. Every claim we make is cosmetic, and every proof point here is one we can stand behind.
Made in USA
Formulated and filled domestically.
Formaldehyde-free
No formol or formaldehyde-releasing agents.
Paraben-free
Preserved without parabens.
Odorless
Aqueous formula. Free of organic solvents.
Registered facility
Facility and product registration details available on request.
6 wks
Roughly how long a fingernail takes to grow out. Results vary from person to person.
Customer review
Before & after
Customer-submitted photos. Individual experiences vary.
5-star reviews from Amazon
Read all reviews on Amazon★★★★★
Amazing results in just one week!
“After just one week of using it every night, I noticed a huge improvement in my nails. The packaging is beautiful and elegant, and it’s small enough to carry in your purse so you can use it anywhere. The product absorbs very quickly.”
Luis Brito
Verified Purchase · June 25, 2026
★★★★★
My nails are so healthy and strong.
“My nails have grown substantially faster and stronger since using these pens… I will definitely be buying more of these! They are amazing! The brush allows for even, targeted application to cuticles and nails.”
Faith S.
Amazon Vine review · December 22, 2024
★★★★★
My cuticles are improved during this dry winter.
“My cuticles turn into hangnail central with the cold dry air. In the time since I have started using this product, I have noticed a marked reduction in the cracking and peeling of my cuticles.”
Alex
Amazon Vine review · January 10, 2025
Excerpts from reviews on the NailPlex Pen Amazon listing. Individual experiences vary.
07 — Our story
Built from a personal problem. Backed by purpose.
PharmaBlue Labs was created from a simple frustration: nails that kept breaking, despite trying everything. We are building thoughtful, science-led care for beauty concerns that deserve more attention.
08 — Questions