The natural way to cure darker lips is:
1. lemon
2. rose petals
3. sugar
4. Pomegranate
Try these on your lips. You will see the magnificent results on a week.
I think you should stop smoking and drinking coffee as much as you can. That's the most important thing.
Besides, you should drink a lot of water each day 2-2.5l per day.
BTW, I have a remedy for you, each time before going to bed, you put some honey on your lips and wash gently in the morning with towel. Or you can change the daily routine with sleeping mask for lips with honey )))) Hope you have the better result.
The natural way to cure darker lips is:
1. lemon
2. rose petals
3. sugar
4. Pomegranate
Try these on your lips. You will see the magnificent results on a week.
You can add some water in baking soda and make a paste of it. Apply this paste to your lips and after sometime rinse it and apply lip balm.
Exfoliate your lips more often, that might help