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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💅 Nail care that means business—restore, reveal, and rock flawless nails.

FAST ACTING NAIL REVIVAL - See noticeable clarity and smoothness in just 48 hours—because your nails deserve a glow-up now.
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KerasalNail Fungus Extra Strength is a dermatologist-developed restorative treatment designed to visibly improve nail clarity, smoothness, and texture caused by fungal damage. Trusted by over 10 million users worldwide since 2010, it features a precision tip for targeted, mess-free application and combines urea and lactic acid to exfoliate and hydrate nails, delivering noticeable results in as little as 2 days.

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