Merz Aes­thet­ics hands the mic to Christi­na Aguil­era in Botox ri­val cam­paign

Words can’t bring Christi­na Aguil­era down — but frown lines can. The singer-song­writer and ac­tress is the lat­est celebri­ty ad­di­tion to Merz Aes­thet­ics’ “Beau­ty on Your …

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