RIMAN three-piece set: three bottles, four steps
Count the roles and the order, not only the bottles.

The Taiwan Active Three Set discussed here contains Dermatology Booster, Dermatology Serum and Dermatology Cream. Its composition is a Taiwan example, not a promise that every local store sells the same set.
After cleansing and any preparation appropriate to your products, the sequence shown is Booster → Serum → the same Booster again → Cream. Three bottles therefore occupy four positions.
Read each product’s directions for amount and method. Compare the contents with what you already own; a set is useful only if those products fit your needs and do not merely repeat existing steps.
Taiwan prices, stock and offers do not apply automatically overseas. Check your local official RIMAN store for the exact names, set contents and instructions before ordering. Start with the products you need, rather than completing a set just for the bottle count.
These articles use the Director’s Taiwan ICD routine as an example. Product names, formulas, sets and directions can differ by market. Check the packaging and your local official RIMAN store before use or purchase.