Everything DoseRank tracks on the foam bath shelf. The category itself is never ranked: 15 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 foam bath 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 43 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Immune toleranceBalanced immune regulation without excessive reactivity.2 rankedLimited
Range of motionExtent of achievable joint movement.2 rankedModerate-strong
Pregnancy rateFrequency of achieved pregnancies.1 rankedModerate-strong
Joint stiffnessReduced ease of joint movement, especially after rest.2 rankedStrong
Dry eye symptomsIrritation, burning, or dryness of the eyes.2 rankedModerate-strong
Atopic dermatitis symptomsItching, rash, and inflammation related to eczema.2 rankedModerate-strong
Vitamin C statusBiochemical sufficiency of ascorbic acid.4 rankedStrong
EdemaSwelling due to excess fluid accumulation.3 rankedModerate-strong
Common cold incidenceFrequency of upper respiratory infections resembling the common cold.5 rankedModerate-strong
Dyspepsia or indigestionUpper abdominal discomfort related to digestion.2 rankedStrong
Skin hydrationMoisture content or hydration of the skin.2 rankedLimited
Uric acidPurine metabolism marker associated with gout and cardiometabolic risk.4 rankedModerate-strong
Vascular functionOverall health and reactivity of the circulatory system.2 rankedModerate-strong
Oxidative stress biomarkersLaboratory indicators of oxidative damage or redox imbalance.4 rankedModerate-strong
Joint functionAbility of joints to move and support normal activity.2 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best foam bath supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 15 products against that goal's trials.