It's generally not recommended to use facial serums daily.
While facial serums can provide rich nutrients to the skin and help improve its condition, frequent use may lead to some adverse effects. Specifically, daily use of facial serums may cause over-nourishment, potentially triggering milia and acne. Furthermore, long-term use may lead to skin dependence and even drug resistance, causing the skin to gradually respond less effectively to the serum and requiring higher concentrations to achieve the same results.
The frequency of facial serum use is generally recommended to be determined based on individual skin type and needs. Typically, two to three times a week is suitable. When using it, it's important to pay attention to the correct application method, such as applying the serum after toner and before moisturizer, and massaging it in to promote absorption.
In short, to maintain healthy skin, it's advisable to use facial serums appropriately and avoid the adverse effects of overuse.
