hi, thank you for putting up your query on HCM. pigmentation of lips can be genetic as well as acquired. since you already using glomax lip gel, i would suggest you to continue using it as it contains niacinamide which helps in counteracting pigmentation. apart from the gel, certain things you should keep in mind are: .use lip balm containing sunscreen before goin out. also it prevents dry and chapped lips. and mosturise them. . always remove you lipstick before going to bed with cleanser as cosmetics can aggravate pigmentation. also prefer lipsticks contating vitamin e. . eat plenty of green vegetables, fruits containig vitamin and lots of water. these are few measures you can take apart from applying topical. thank you