Cosmetic ingredients are listed in order of concentration (above 1%). The active ingredient you're paying for should appear in the top 5 for it to have meaningful effect. When a serum advertises 'vitamin C brightening' and vitamin C appears 11th on the list, you're paying for the marketing, not the ingredient.
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Cosmetic ingredients are listed in order of concentration (above 1%). The active ingredient you're paying for should appear in the top 5 for it to have meaningful effect. When a serum advertises 'vitamin C brightening' and vitamin C appears 11th on the list, you're paying for the marketing, not the ingredient.
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