serums are mainly used to hydrate the face and even out the complexion, and are applied after cleansing and before the cream
for removing make-up and cleaning the face, they form the first step of the routine
Masks and creams are used at the end for deep facial hydration
I'm not someone who takes vitamins regularly, but I use these and the difference is visible
in addition to cosmetic products, massagers benefit the fresh appearance of the face