Two stars because the Hard as Nails and Diamond Strength stayed on well. But they achieved nothing. I have thin soft nails that break off very easily but both these treatments, tried since January, did nothing. In fact my nails started to flake as well. It was all an expensive waste of time, so save your money. Take a biotin supplement and keep moisturising your nails instead.
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Coty, Inc. is an American based multinational beauty company founded in 1904 by François Coty.