The Karuna Multi-Vitamin Serum free sample is available via targeted social media ads. To potentially receive this offer, follow Karuna on Facebook and Instagram, like and comment on their posts, and search for the brand online. Keep an eye on your social media feed for an ad about the free sample, and click 'Get Offer' when you see it. The sample, possibly full-size, may take about 3 weeks to arrive.

A daily dose of glow for all skin types & ages. Creamy, fast-absorbing serum enriched with lightweight hydrators & age-defying antioxidants for rejuvenating, youth-promoting skin support.