Cleansing composition

1. A dental appliance cleansing composition comprising:

a. a fatty acid isopropyl ester;

b. a polyoxyethylene sorbitan ester; and

c. a second sorbitan ester;

wherein the cleansing composition comprises 0.7 to 12% w/w of propylene glycol and 85 to 90% w/w of water and does not contain methanol, ethanol or isopropyl alcohol, wherein the cleansing composition is in the form of a microemulsion.

2. A dental appliance cleansing composition according to claim 1 , wherein the fatty acid ester isopropyl ester is selected from isopropyl palmitate, isopropyl myristate, and combinations thereof.

3. A dental appliance cleansing composition according to claim 1 , wherein the polyoxyethylene sorbitan ester is selected from polysorbate 20, polysorbate 21, polysorbate 40, polysorbate 60, polysorbate 65, polysorbate 80, polysorbate 81, polysorbate 85, and combinations thereof.

4. A dental appliance cleansing composition according to claim 1 , wherein the second sorbitan ester is selected from sorbitan monostearate, sorbitan tristearate, sorbitan monolaurate, sorbitan palmitate, sorbitan oleate, sorbitan sesquioleate, sorbitan trioleate, sorbitan isostearate, and combinations thereof.

5. A dental appliance cleansing composition according to claim 1 wherein the fatty acid isopropyl is present in an amount from 3 to 15% w/w.

6. A dental appliance cleansing composition according claim 1 , wherein the polyoxyethylene sorbitan ester is present in an amount from 0.5 to 4% w/w.

7. A dental appliance cleansing composition according claim 1 , wherein the second sorbitan ester is present in an amount from 0.5 to 4% w/w.

8. A dental appliance cleansing composition according to claim 1 , wherein the composition further comprises at least one preservative selected from potassium sorbate, sodium benzoate, phenoxyethanol, cetylpyridinium chloride, and combinations thereof.

9. A dental appliance cleansing wipe impregnated with a composition as defined in claim 1 .