Dollar Tree Facial Serum Guide: Hyaluronic Acid and Vitamin C Concentrations Tested You walk into Dollar Tree expecting plastic storage bins and off-brand candy. Instead, you find facial serums claiming the same actives as $80 department store bottles. The skepticism is earned—but so is the curiosity. I've spent the past three months field-testing every dollar tree facial serum I could find, tracking ingredient lists, running side-by-side comparisons with premium formulations, and documenting what actually happens when you apply them daily. This isn't about finding "good enough" alternatives. It's about understanding formulation science well enough to separate functional actives from filler water, then building a regimen that delivers measurable results whether you spend $1.25 or $125. What Is Dollar Tree Facial Serum? Dollar tree facial serum ...