Lips darkening

Do you go out in the sun a lot? It could be hyperpigmentation from the sun, in that case I’d recommend a lip balm with SPF. It could also be a Vitamin B12 deficiency, but hopefully not. Usually lip darkening isn’t bad. You can try these two products and see if they work, if not I’d recommend seeing a dermatologist :)

look for a lip balm with kojic acid. Kojic Acid is highly effective for hyperpigmentation, especially on the lips. I would also suggest ALWAYS protecting your lips with an SPF balm, to prevent further damage from the sun. Also, gently rub your lips at night and in the am with a oil. You could also use a serum with kojic Acid (yes, you can apply it to your lips). just be sure it only has other hydrating ingredients with it; such as Glycerin, Hyaluronic Acid, Shea Butter, oils, Niacinamide, Squalene, etc; (just be sure nothing irritating is on the ingredient list). There is a store front on Etsy that makes a kojic acid balm that is highly reviewed! The store is called; BOTANICAL DELIGHT. (pink lips lightening balm) It's PACKED with moisturizing ingredients & Kojic Acid!

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I think you must check if you have any health issues like PCOS or something that has to do with hormones when there is something wrong with your hormone your lips might darken and try to use lip balm that has lactic acid that can exfoliate and try using lip balm with spf and also sleep with a thick layer of vaseline avoid drinking or smoking or having tea and caffeine coz it might stain your lips hope this helps 💙

drink plenty of water. exfoliate once a week and apply lip oil everyday. if it has anything to do with medicine then try stopping the medicine?