Serums & Essences · 16/06/2026
Telling the difference between a temporary purge and a genuine reaction when starting a new vitamin C serum
A brief initial breakout sometimes attributed to "purging" and a genuine adverse reaction look superficially similar at first, but they follow different timelines and call for different responses.
What "purging" actually refers to, and why it's a real but specific, limited phenomenon
True purging refers to a temporary increase in breakouts when introducing an active that accelerates cell turnover, theoretically bringing existing micro-comedones to the surface faster than they would have emerged naturally — a real phenomenon for actives like retinoids and certain exfoliants, though the term gets applied more loosely to any new-product breakout than the narrower, accurate definition actually supports.
Why vitamin C specifically doesn't have a strong turnover-acceleration mechanism that would cause genuine purging
Vitamin C's primary mechanisms are antioxidant action and tyrosinase inhibition, not the kind of significant cell-turnover acceleration that genuine purging depends on — meaning a breakout after starting a new vitamin C serum is more likely a genuine reaction or irritation response than true purging, despite "it's just purging" being a common assumption people reach for with any new product.
Responding to a new breakout after starting vitamin C as a likely reaction rather than assuming purging will resolve it
If breakouts increase after introducing a new vitamin C serum, treat it as a probable reaction requiring discontinuation or reduced frequency rather than assuming it's temporary purging that will resolve on its own — given vitamin C's mechanism doesn't strongly support genuine purging, the more cautious, reaction-focused response is the better-informed approach.
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