Leave-on oral care compositions

1. An oral care composition comprising:

a) from about 0.1% to about 10%, by weight of the composition, of a hyaluronic acid or a salt thereof, wherein the hyaluronic acid has a weight average molecular weight of from about 900,000 Daltons to about 2,000,000 Daltons;

b) from about 0.5% to about 10%, by weight of the composition, of a polyacrylic acid;

c) from about 0.5% to about 10%, by weight of the composition, of an additional polymer, wherein the additional polymer comprises polyvinyl pyrrolidine, hydroxyethyl cellulose, or combinations thereof, wherein the additional polymer does not include an anionic cellulose;

d) from about 30% to about 70%, by weight of the composition, of total water content; and

e) allantoin;

wherein the oral care composition is substantially free of abrasives; and

wherein the oral care composition is a leave-on composition.

2. The oral care composition according to claim 1 , wherein the hyaluronic acid is present in an amount of from about 0.1% to about 5%, by weight of the composition.

3. The oral care composition according to claim 1 , wherein the polyacrylic acid is present in the amount of from about 0.5% to about 5%, by weight of the composition.

4. The oral care composition according to claim 1 , wherein the oral care composition comprises from about 0.01% to about 5%, by weight of the composition, of the allantoin.

5. The oral care composition according to claim 1 , further comprising a polyol selected from the group consisting of glycerol, erythritol, xylitol, sorbitol, mannitol, and combinations thereof; wherein the polyol is present in the amount of from about 1% to about 30%, by weight of the composition.

6. The oral care composition according to claim 1 , further comprising a vitamin selected from the group consisting of Vitamin C, Vitamin E, Vitamin B5, and combinations thereof.

7. The oral care composition according to claim 1 , wherein the total water content is from about 40% to about 75%, by weight of the composition.

8. The oral care composition according to claim 1 , wherein the oral care composition is in a gel form.

9. The oral care composition according to claim 1 , wherein a ratio between the polyacrylic acid and the additional polymer is from about 2.5:1 to about 1:2.5.

10. The oral care composition according to claim 1 , wherein the additional polymer comprises polyvinyl pyrrolidine.

11. A method of improving Gum Health of a subject, the method comprising the steps of applying the oral care composition of claim 1 onto intraoral tissue of the subject, and leaving the oral care composition on the intraoral tissue a duration of time of from about 1 minute to about 1000 minutes; and optionally wherein the applying step is conducted as the last step of an oral hygiene regimen.

12. The method of claim 11 , wherein the oral care composition is applied onto the intraoral tissue of the subject with an applicator comprising a handle and a head to spread the oral care composition onto the intraoral tissue of the subject.

13. A method of improving Gum Health of a subject, the method comprising the steps of:

(a) brushing teeth of the subject with an antibacterial toothpaste; and

(b) subsequently, applying the oral care composition of claim 1 onto intraoral tissue of the subject, and leaving the oral care composition on the intraoral tissue for a duration of time of from about 1 minute to about 1000 minutes.

14. The method of claim 13 , wherein the oral care composition is applied onto the intraoral tissue of the subject with an applicator comprising a handle and a head to spread the oral care composition onto the intraoral tissue of the subject.

15. A kit comprising a toothpaste and an oral care composition according to claim 1 .

16. A kit comprising the oral care composition according to claim 1 and a delivery carrier, wherein the delivery carrier comprises strip, film of material, dental tray, aligner, sponge material, applicator, or mixtures thereof.