Compositions and methods for treating diseases of the nail

1. A pharmaceutical formulation comprising

a. ethanol, 50% to 70% (w/w),

b. cyclomethicone, 10% to 15% (w/w),

c. diisopropyl adipate, 8% to 15% (w/w),

d. C12-15 alkyl lactate, 8% to 15% (w/w), and

e. antioxidant, 0.001% to 0.50% (w/w),

wherein the surface tension of the composition is 40 dynes/cm or less; and

wherein the formulation is free of polymeric film forming compounds.

2. The pharmaceutical formulation of claim 1 , wherein the formulation is for delivery of an active pharmaceutical ingredient to the nail or nail bed.

3. The pharmaceutical formulation of claim 1 , wherein the surface tension is 35 dynes/cm or less.

4. The pharmaceutical formulation of claim 3 , wherein the surface tension is 30 dynes/cm or less.

5. The pharmaceutical formulation of claim 4 , wherein the surface tension is 25 dynes/cm or less.

6. The pharmaceutical formulation of claim 1 , further comprising an antifungal active pharmaceutical ingredient.

7. The pharmaceutical formulation of claim 6 , wherein the antifungal active pharmaceutical ingredient comprises an imidazole or a triazole compound.

8. The pharmaceutical formulation of claim 6 , wherein the antifungal active pharmaceutical ingredient is selected from the group consisting of miconazole, ketoconazole, clotrimazole, econazole, bifonazole, butoconazole, fenticonazole, isoconazole, oxiconazole, sertaconazole, suconazole, tioconazole, fluconazole, itraconazole, ravuconazole, posaconazole, voriconazole, terconazole, and (2R,3R)-2-(2,4-difluorophenyl)-3-(4-methylenepiperidine-1-yl)-1-(1H-1,2,4-triazole-1-yl)butane-2-ol.

9. A method for the treatment of a disorder of the nail or nail bed comprising topically applying to the surface of the nail of an individual suffering from said disorder a pharmaceutical composition comprising an active pharmaceutical ingredient and (a) ethanol, in an amount of 50% to 70% (w/w); (b) cyclomethicone, in an amount of 10% to 15% (w/w); (c) diisopropyl adipate, in an amount of 8% to 15% (w/w); (d) C12-15 alkyl lactate, in an amount of 8% to 15% (w/w); and (e) antioxidant, in an amount of 0.001% to 0.50% (w/w); wherein the application of the composition is in an amount and for a time sufficient to ameliorate the signs and symptoms of the disorder, wherein the surface tension of the composition is 40 dynes/cm or less, and wherein the composition, when applied to the surface of a nail, does not form a solid film.