Our Methodology
How we test, score, and review every product on Evident. The full six-criteria system, our testing protocols, and how we handle products from brands we own.
🛡️ Our Standards
The Six Scoring Criteria
Every product on Evident — across supplements, sleep products, devices, skincare, dental, and peptides — is scored on the same six dimensions with consistent weights. The specific criteria within each dimension are adapted to the category (formulation quality matters differently for a protein powder than for a massage gun), but the framework and weights are identical everywhere.
Material Safety / Formulation
25%What is actually in the product? For supplements: ingredient sourcing, third-party testing (NSF, Informed Sport), heavy metals, label accuracy. For devices: build quality, certifications (FDA clearance, IEC/CE), electrical safety. For mouth tape: adhesive ingredients, certifications (ISO 10993, biocompatibility), PFAS testing. Weighted heaviest because these products go on or in your body.
Trust & Reputation
20%Independent validation of the brand and product. Peer-reviewed clinical studies, third-party lab results, customer review patterns across platforms (Amazon, Trustpilot), BBB record, regulatory history (Prop 65, NAD, class actions). We look for what the brand can prove, not what it claims.
Features / Efficacy
20%Does the product do what it says? For supplements: clinical dosing vs. label dose, delivery system, bioavailability. For devices: performance specs (stall force, irradiance, accuracy vs. gold standard). For mouth tape: adhesion strength, breathability, hold across consecutive nights.
Value & Policy
15%Cost per use vs. quality delivered, return policy length and terms, subscription practices (dark patterns get flagged), guarantee claims, trial period availability. Premium pricing is not penalized if the formulation, testing, and transparency justify it.
Subjective / Firsthand Testing
10%Our hands-on experience with the product across multiple testers. Comfort, ease of use, taste/texture (supplements), noise (devices), packaging quality, and the general question: would we actually use this daily?
Overall
10%Weighted composite score on a 1–10 scale. Accounts for the five dimensions above plus any category-specific factors. Published transparently so you can see exactly how each score was calculated and compare products on the dimensions that matter most to you.
Our Testing Process
Every review on Evident follows the same six-step process. The order matters — we source products before we know what we’re looking for, so the brand can’t influence the test.
We buy every product at full retail price from the same channels a normal customer would (Amazon, brand site, retail stores). We do not accept free samples from brands. For products from brands we own (currently Sleep Karma), we source the same retail inventory — we do not use pre-production samples or special batches. This is the single most important rule in our process — brands cannot influence the result if they don’t know they’re being tested.
Every product goes through a minimum testing period with multiple testers to capture a range of experiences. Top-scoring products get extended runs (5–7 consecutive nights) so we can verify whether early performance holds over time.
Where applicable, we commission independent lab tests to verify ingredient claims, check for contaminants, and validate nutritional profiles. Results are published in full, including the raw lab report when the lab permits.
For categories where individual experience varies (sleep, supplements), we recruit diverse participant panels to test products under controlled conditions and report their findings alongside our own.
Each product receives a score in each of the six criteria above, then a weighted overall score. We publish the scoring breakdown for every product so you can see exactly how we arrived at each rating — no black boxes, no subjective vibes.
Reviews are updated when formulations change, when new lab data comes in, when brands respond to our findings, or when our internal verification system flags something needs to be re-checked. Every change gets logged on our public corrections page.
Methodology at a Glance
How We Handle Products From Brands We Own
Evident Health LLC owns Sleep Karma, a bamboo silk mouth tape brand. Sleep Karma is reviewed on Evident using the exact same six-criteria methodology described above, with no scoring exceptions. Sleep Karma is rated #1 in our mouth tape category not because we own it, but because we built it after testing all 25 brands in our database and finding none of the others met our standards. Sales of Sleep Karma support Evident’s independent testing and research. We disclose this ownership on every page where Sleep Karma appears. Read our full ownership disclosure.
Reviews Get Updated
Reviews on Evident are not static. When formulations change, when new lab data comes in, when brands respond to our findings, or when reader reports flag something inaccurate, we update the review and log the change publicly on our corrections page. If you find something on Evident that you think is wrong, please contact us.
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