Permanent shrinkage differs from reduced visibility
Cleveland Clinic
Dermatologist Jane Wu explains that pore size is largely genetic and cannot be permanently shrunk, although pores can look less prominent.
Based on: Cleveland Clinic

No. Skin care products can make facial pores less noticeable, but that is different from permanently shrinking them. Pore size is strongly influenced by genetics, and their appearance also changes with oil production and skin firmness.
Cleveland Clinic explicitly distinguishes permanent shrinkage from reducing the appearance of pores. The American Academy of Dermatology likewise describes skin care effects in terms of making pores less noticeable, explaining that oiliness, clogging and loss of firmness can make them look larger.
A visible improvement can be real without being permanent. A claim that a product minimizes the appearance of pores is narrower than a promise to change their size permanently. These sources do not establish that every product marketed for pores works equally well.
Less visible pores do not demonstrate permanent shrinkage. The wording of a cosmetic claim matters.
Cleveland Clinic
Dermatologist Jane Wu explains that pore size is largely genetic and cannot be permanently shrunk, although pores can look less prominent.
Based on: Cleveland Clinic
American Academy of Dermatology
The academy explains that clogged pores, oiliness and reduced skin firmness can make pores more noticeable. Its guidance describes improvements in appearance rather than permanent elimination or a permanent size change.
Based on: American Academy of Dermatology
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