what is the active ingredient? is it amorolfine?

I believe the active ingredient is lactic acid. My recollection from Intro to Biology is that lactic acid is an enzyme that dissolves keratin.

Do you apply this and then put a band aid over it and change it every day?

You wash the nail and apply it once a day. No band-aid. I applied it just like Teri did, at night just before bed.

Is it better if you do not polish your nails

You can use breathable nail polish!

does it help to prevent toe nail from splitting?

Im not sure I only used it for some cracks and creases that I had on the upper layer, this worked for me to remove the upper layer and now my nails are flat and like new again.

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Kerasal Nail Fungus Extra Strength | Restorative Nail Repair for Damaged Nails, 0.33 fl oz (Packaging May Vary)

Kerasal Nail Fungus Extra Strength | Restorative Nail Repair for Damaged Nails, 0.33 fl oz (Packaging May Vary)

Product ID: 727565750

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Details

Brand
Kerasal
Item Form
Liquid
Item Weight
0.01 Ounces
Liquid Volume
0.33 Fluid
Specialty
Damaged Nail

⏳Visible results in 2 days

🎯Precision tip for mess-free application

🧪Dermatologist-developed formula with urea & lactic acid

Description

💅 Nail care that means business—fast, precise, and trusted worldwide.

PRECISION PERFECT - Targeted application with a precision tip ensures zero mess and maximum impact every time.
COMPREHENSIVE CARE - Reduces thickness, smooths texture, and restores clarity to combat fungal nail damage effectively.
GENTLE YET POWERFUL - Dermatologist-developed formula exfoliates and hydrates without harsh chemicals—safe for daily use.
TRUSTED BY MILLIONS - Join over 10 million users worldwide who’ve transformed their nails since 2010.
FAST TRACK NAIL REVIVAL - See noticeable clarity and smoothness in just 2 days—because your nails deserve instant glow-up.

Kerasal is a dermatologist-developed nail treatment trusted by over 10 million users since 2010. Its formula with urea and lactic acid visibly restores nail clarity, smoothness, and reduces thickness caused by fungal damage, delivering noticeable results in as little as 2 days. The precision tip allows for targeted, mess-free daily application, making it an essential part of professional nail care routines.

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