Do you know the usage of Xiuli luminous bottle? We can put 4-5 drops of this essence on our face after cleansing and using toner, and massage until it is absorbed. If the budget is limited, Serrico essence can be used as a local essence, specially applied to spots, dullness and acne marks. But I think its overall effect of brightening skin tone is really good. I still recommend something luxurious, for the whole face. Since you have bought something good, you should use it as much as possible to make it more effective. You can use it all morning and all night. If you use luminous bottles during the day, you should do a good job of sun protection afterwards.
Finally, I need to remind you that before using magnesium white essence, you must ensure that your skin is in a stable state before using it. If you still have acne or inflammation on your face or are sensitive to skin barrier damage, it is not recommended to use it at this time.