Because there are only few fixed ingredients that can be used in skin care for fighting acne.
Its really important to find which ingredients suits you the best.
Below is a real case study. You can see the R side of the face is clearing up while the L side is getting more inflamed.
With the half face test, he was able to get the right combination that works for him and you can too!
Why the need for a half face test?
< 1 min read
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