Everything DoseRank tracks on the k-beauty toners shelf — Docosahexaenoic Acid (DHA). The category itself is never ranked: 71 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing k-beauty toners supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Omega-3 indexRed blood cell EPA+DHA content reflecting omega-3 status.11 rankedStrong
C-reactive proteinAcute-phase inflammatory marker.19 rankedStrong
Essential fatty acid statusAdequacy of physiologically necessary fatty acids.8 rankedStrong
Pregnancy rateFrequency of achieved pregnancies.1 rankedModerate-strong
Wrinkle severityDegree of visible skin wrinkling.5 rankedStrong
ThermogenesisHeat production and metabolic energy expenditure.32 rankedStrong
Resting energy expenditureCalories burned at rest; marker of basal metabolism.32 rankedStrong
Aspartate aminotransferase (AST)Enzyme used to assess liver and muscle injury.3 rankedStrong
Advanced glycation end productsMarkers of glycation-related tissue damage.3 rankedModerate-strong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.18 rankedStrong
Muscle massQuantity of skeletal muscle tissue.22 rankedStrong
TriglyceridesCirculating triglyceride concentration.20 rankedStrong
Eye strainVisual fatigue or discomfort from eye use.4 rankedModerate-strong
Oral healthOverall condition of the mouth, teeth, and gums.3 rankedStrong
Dry eye symptomsIrritation, burning, or dryness of the eyes.14 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best k-beauty toners supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 71 products against that goal's trials.