Yuliana Lestari, and Herma Retno Prabayanti. 2025. “The Influence of the Quality of Promotional Content for Skincare Products on Customer Engagement (Survey Study on Followers of the Instagram Account @beliacosmetic)”. The Commercium 9 (1):490-500. https://doi.org/10.26740/tc.v9i1.66061.