Skin , serum

[Anonymous]

Hi everyone, I have a questions that at night I must use serum and then use mask , or mask and then serum , and how long that I can use them ? And do I need wash my face after I use it , ex: if I had use mask first and how long that I can use next serum . Thank you 

[quspork]

@Anonymous  You certainly don't have to use either serums or masks, but you can use either or both, depending on what you feel like your skin needs. When to use them will depend on the types of serums and masks you're asking about. Some masks, like clay masks and some other wash-off masks would come right after cleaning and then be rinsed off before any other steps. But things like sheet masks or sleeping packs get used later in your routine, after serums and do not get rinsed off.