The full Korean PM routine, but modular. Five core layers (oil cleanse, gel cleanse, hydrating toner, serum, sleeping mask) plus up to three extras when you have time. Five layers takes seven minutes; eight takes twenty.
The minimum routine. Skip nothing here.
Step 1: oil cleanse · removes makeup/SPF
Step 2: gel cleanse · daily
Step 4: hydrating toner · daily
Step 6: ampoule/serum · niacinamide
Step 7b: sleeping mask · seal
Optional add-ons. Each has a "when to add" trigger — none are daily-use unless the trigger fits.
Step 3: exfoliating toner · 2-3× weekly only
When to add: add 2-3× weekly between cleansers; never daily
Step 5: essence · plumping
When to add: add as plumping hydration layer after toner
Step 7a: eye cream · pat in
When to add: add as concentrated eye step before the sleeping mask