ABSTRACT Purpose: The objective of this study was to evaluate the clinical effect of mouthwash containing sun-dried salt with or without natural materials on gingivitis and halitosis. Materials and Methods: A total of 77 subjects conducted a clinical trial (distilled water; 26 control group subjects, sun-dried salt; 25 group A subjects, sun-dried salt with natural materials; 26 group B subjects). During the experimental period, subjects used the appropriate mouthwash for 30 seconds, 15 mL/time, three times/day for 1 week. At baseline and 1 week, five parameters (gingival index, GI; plaque index, PI; sulcus bleeding index, SBI; halitosis index, HI; gingival cravicular fluid, GCF) were assessed. Results: GI, SBI, and HI in the control group increased at 1 week compared to baseline. These indices decreased and increased in groups A and B, respectively. PI in the control group decreased at 1 week but increased in the experimental groups increased. GCF increased in the control group and decreased in the experimental groups. Conclusion: Mouthwash containing sun-dried salt with or without natural materials could prevent deterioration of gingivitis and halitosis. However, they could not inhibit plaque accumulation.