Map the jobs
Group products by what they do: cleanse, treat, moisturize, and protect. Duplication becomes obvious when labels are replaced by functions.
Protect the essentials
A cleanser you tolerate, a moisturizer that feels comfortable, and daily sun protection form a steadier base than a rotating stack of trends.
Change one thing at a time
Introduce a new product slowly and patch test it. This makes reactions easier to identify and gives the routine time to settle.