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Castor-derived acidUndecylenic Acid in Nail Defender
Label ingredient 1 of 6

What Undecylenic Acid is and its role in Nail Defender
Undecylenic acid is a fatty acid obtained from castor oil. It has been used for decades in foot- and skin-care products because it is light, oily and blends easily into sprays.
It is the first name on the Nail Defender label, so the whole formula is organised around it: a daily spray that works on the outer surface of the nail, where dullness and rough texture show up first.
Clove Oil stands next to it as its botanical partner.
Undecylenic Acid on the Nail Defender label
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What Undecylenic Acid does in Nail Defender
Using Nail Defender with Undecylenic Acid: a quick note
Nail Defender is a cosmetic spray, not a medicine. A nail that hurts, thickens quickly, lifts from the skin or changes colour fast should be checked by a doctor or podiatrist.
Undecylenic Acid is one of six reasons to try Nail Defender
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