It's understandable to be concerned about changes in the appearance of your lips. A dark spot on the lip can be caused by various factors, including hyperpigmentation, sun exposure, or irritation from habits like lip licking. Here are a few considerations and potential steps you can take: Sun Protection: It's great that you're already using chapstick with sunscreen. Continue using a lip balm with SPF to protect your lips from UV damage, which can cause or worsen pigmentation. Hydration and Moisturization: Keep your lips well-moisturized to prevent further irritation. Petroleum jelly is a good option for maintaining moisture. Avoid Lip Licking: Try to minimize lip licking, as saliva can irritate the skin and exacerbate pigmentation changes over time. Monitor Changes: Keep an eye on the spot for any changes in size, shape, or color. If it changes or if you have any concerns, it's important to consult with a dermatologist. Consult a Dermatologist: A dermatologist can provide a proper evaluation and determine if the dark spot is due to hyperpigmentation or another condition. They can offer treatment options if necessary, such as topical lightening agents or other interventions. It's always best to get a professional opinion to ensure that any treatment is safe and appropriate for your specific situation.