The line is closer than you think
Anything implying treatment, cure or medical benefit is restricted. Plenty of entirely legitimate products get flagged because the description was written enthusiastically rather than accurately.
People search by concern and ingredient
Not by your product name. Titles and keywords should follow how buyers describe the problem — "niacinamide serum for oily skin" beats your internal SKU name every time.
Repeat rate justifies the first order
If customers reorder, the first sale can run thinner. Same rule as always: show us the repeat data before we set the target.
More: Google Ads for beauty.