The methods to lighten chloasma include: avoiding triggering factors, topical medication, systemic medication, phototherapy and so on. 1. Avoiding triggering factors: In normal life, one should pay attention to avoiding the use of drugs that cause hormone level changes and avoiding taking photosensitive drugs, as well as ensuring sufficient sleep, avoiding tension and anxiety, using cosmetics correctly, paying attention to sun protection, and actively treating liver diseases or gynecological diseases. 2. Topical medication: Hydroquinone cream can be chosen, which is the first-line drug for treating melasma with strong decoloration effect, arbutin and deoxyarbutin can also be chosen, in addition to fructic acid chemical exfoliation, which is also an effective auxiliary method for treating melasma. 3. Systemic medication: Vitamin C and vitamin E can be taken orally, in addition, tranexamic acid and glutathione can be used in small doses. 4. Photoelectricity treatment: Photoelectricity treatment includes laser treatment and intense pulse light treatment. If chloasma is diagnosed, it is recommended to consult the doctor in time and follow the doctor’s instruction to treat it, and do not use drugs indiscriminately.