What is causing dark lines on my lips that looks like lip liner? (photo)

"By injecting a small amount of Botox, Dysport, Xeomin, or Jeuveau into this area, the muscles will relax, causing the hard, deeps lines to smooth and improving the lines and wrinkles. Neuromodulators take 2 to 4 weeks to start working and lasts for up to six months. I suggest getting a formal evaluation with a cosmetic dermatologist. Best, Dr. Emer
"

This discoloration may be genetic. I would recommend Melarase PM + Q switch laser with an expert. Best, Dr. KaramanoukianLos Angeles

Sometimes, electrolysis can exacerbate such melasma in this distribution of the lips. Melasma needs long term commitment with skin care and avoidance of skin factors such as sun exposure (Spectrase Sun Block) which has wide UV spectrum and SPF 30+ protection. 
Daily good habits with topicals may well help you chieve your goals with a good skin system like the Brightening Kit from KareSkin (see link). You may want to start with Melarase and Pigmentation Correction Complex. Scler-X from another vendor is for PIH relief (see link). 
Melarase AM is non hydroquinone based and allowed for use in the EU and UK.
Best
H Karamanoukian MD FACS

Most likely melasma of your lip stimulated by excessive sun exposure. Try wearing clear lip balm with high SPF son blocking agents

Laser treatments can help reduce this but they can recur with more sun exposure.

Consider an in person consult with a local dermatologist.

Best,

Mats Hagstrom MD

We love the sun, but the hyperpigmentation to our skin is a result from the suns rays accumulated over time.Consider tattooing your lips to have them all blend more.Wear spf 30+, and chap stick with spf 30+, apply every two hours when in direct sun light. Wide brimmed hats are help and stylish as well.Best. Dr Brecht Seattle, Wa

Melasma can not be completely cured, however effective treatment are possible. This is because your skin is extremely sensitive to UV and even the smallest amount can stimulate your pigment cells to produce colour. The mainstay of treatment is strict UV protection- hats, sunglasses and SPF every 4 hours.



I prefer to use a combination of creams and laser for melasma. Hydroquinone can be used (5-8%), along with vitamin A creams. I usually start my patients on laser (low dose Q switch or Picosure) a few weeks after they commence on creams.





In some cases I combine glycolic AHA peels, and in other cases I use a tablet called Tranexamic acid to help.





 All the best, Dr Davin Lim. Laser, surgical and aesthetic dermatologist. Brisbane, Australia