FREE Cold Sore Relief Serum Study From MARK Los Angeles (Must Apply)

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Apply to participate in a free MARK Los Angeles Cold Sore Relief Serum study and receive a $100 gift card for your feedback! This innovative plant-based serum harnesses powerful flavonoids known for their anti-viral and anti-inflammatory properties to provide natural cold sore relief. Check out the simple steps below to join this exciting study and help advance science-driven cold sore treatments while getting rewarded.

How to get free MARK Los Angeles cold sore serum:

  1. Visit MARK Los Angeles study signup page by clicking “Get This Offer.”
  2. Fill out the application form with your contact information and cold sore history.
  3. If selected, receive free Cold Sore Relief Serum and $100 MARK Los Angeles gift card.

* US only. Must experience cold sores 3+ times per year to participate. Study duration 2-3 months with bi-weekly check-ins required. Additional terms & conditions may apply. Offer may change at any time.

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