Detailed answer

When you have a skin rash in your mouth, it's important to be gentle and avoid any further irritation. To properly wash your mouth, start by rinsing with lukewarm water to remove any debris or bacteria. Avoid using any harsh or abrasive products such as strong mouthwashes or toothpaste with high levels of mint or menthol. Instead, opt for a mild, non-irritating mouthwash or a solution of saltwater to soothe the rash. It's also advisable to avoid spicy or acidic foods that could aggravate the rash. If the rash persists or worsens, it's recommended to consult a healthcare professional for further evaluation and guidance.