1, exfoliate regularly. Too thick stratum corneum can also cause blackening around the lips, so exfoliate regularly. First, apply a hot towel to your mouth until the cuticle softens. Then, apply exfoliating products to your lips and massage gently.

2. Develop good habits. Don't lick, bite or show your lips, and drink plenty of water. Reduce the stimulation of alcohol and tobacco, eat less spicy and greasy products, eat more fruits and vegetables, and don't be partial to food. At the same time, you can also eat more potatoes, which contain more vitamin C and sodium, potassium and iron. To help change lip color.