With steps 1 to 5, you have prepared and hydrated your skin. With step 6, Serums and Ampoules, your skin is ready to absorb deeper active ingredients to treat and target specific skin concerns and work towards your “skin goals” (e.g. brightening, calming, or firming). It is your medicine cabinet, your problem solver.
The difference between Serums and Ampoules lies mainly in their concentration and usage frequency. In general, Serums are for daily use with a high level of active ingredients while Ampoules are “super-charged”, highly concentrated with active ingredients as an intense booster or “crisis manager” and are, therefore, usually used for a short period only.