Macro view of a healthy nail surface

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.

Nailplex Pen with its box

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
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Full product details

How to use

A translucent protective veil wrapping a nail form
Nailplex Shield bottle and box

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 reviews

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Before & after

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Product testing

Supported testing information will appear here.
PharmaBlue Labs laboratory bench

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

Good to know.