The Process, Step by Step
Every ingredient page and every roundup on this site is built the same way, in this order.
- Define the entity. Identify exactly what the ingredient or note is — the molecule, its position in a family, and what it is commonly confused with. Half the errors in this category are two different things sharing a name.
- Compile the published formulation data. Concentration, form, co-ingredients, packaging, and delivery system, taken from manufacturer product pages, spec sheets and ingredient databases. Where a brand does not publish a concentration, we record that it does not.
- Check the claim against the formula. A stated benefit has to be consistent with what the ingredient is present at and in what vehicle. A claim the formula cannot support gets called out on the page.
- Check the mechanism against published standards and literature. Regulatory documents for permitted concentrations, peer-reviewed work for mechanism, cited specifically rather than gestured at.
- Rank against the stated criteria for that page type, listed below.
- Write the negative. Every pick gets an explicit *who it is not for*. Every roundup gets a *skip this*. If we cannot write an honest negative for a product, it does not go on the page.
The Criteria, Named and Ordered
The same criteria are applied to every page of a given type, in this order of precedence.
| Rank | Criterion | Why it sits here |
|---|---|---|
| 1 | Published concentration and form | If the brand will not say what is in the bottle, nothing else can be assessed. Products that publish get preferred over products that do not. |
| 2 | Vehicle and packaging appropriateness | An unstable active in a clear jar is worth less than a lower percentage in an airless pump. This decides more outcomes than percentage does. |
| 3 | Fit to the stated buyer | Picks are grouped by archetype, not ranked one to ten, because the best product for oily skin is rarely the best for a compromised barrier. |
| 4 | Ingredient list quality | Fragrance, essential oils and irritant load matter more on reactive skin than the headline active does. |
| 5 | Price relative to what is delivered | Considered last and never first. Cheap is not a virtue; paying more for an identical molecule is not either. |
For comparison pages the criteria differ: the strength of the evidence on each side, whether the two options are genuinely substitutes, and whether the stronger option is one most people will realistically keep using. That last criterion is why a comparison here sometimes recommends the weaker option.
What We Have Not Done
Everyone in this category says they tested twenty products. We have not tested any, and we say so.
There is no lab here, no sample cupboard, no panel of testers, no before-and-after photography and no long-term use report. We have not held these products, and we will not describe a texture we have not felt or an outcome we have not observed. Where a page describes how something feels, it is describing what the format generally does — not a personal experience we did not have.
This is the leg of the E-E-A-T stool we cannot honestly stand on, so we do not pretend to. What we offer instead is systematic compilation of published data across a whole category, applied consistently, and the willingness to publish an unflattering conclusion about a popular product.
How We Handle Uncertainty
When published data is unavailable, we say the data is unavailable. When two sources conflict, we say they conflict and name both. We do not fill a gap with a plausible number, and we do not round an unknown into a claim.
This shows up most often in three places on this site. Peptide concentrations are almost never published, so the peptides page says so rather than implying a dose. Ceramide percentages are similarly unpublished and, unusually, that is not a red flag — so we explain why. And snail secretion filtrate potency varies by species and processing in ways no brand discloses, so the percentage on the front of the bottle is explained rather than repeated.
The same rule governs prices. This site has no live price feed, so no price appears anywhere on it. A remembered price is a guess, and a guess printed next to a buy button is a lie with a decimal point in it.
How We Make Money, and What It Does Not Change
Glow & Gild earns affiliate commission through the Amazon Associates program when a reader buys through a link here. That is the whole model. Details are on the affiliate disclosure page, and a disclosure appears above the first affiliate link on every commercial page.
What it does not change: which product is recommended. Commission rates vary considerably between categories and between products within a category, and ranking is never influenced by them. Several picks across this site are the cheapest product in their category, which is a poor commercial strategy and a good editorial one.
No brand has paid for placement here, sent us product, or seen a page before publication. If that ever changes, it will be disclosed on the page in question and in the editorial policy before anything is published.
How to Tell Us We Are Wrong
Email info@glowandgild.com with the page and what is wrong. A published concentration that has changed, a discontinued product, a mis-stated mechanism, a dead source link — all of it is useful.
Corrections are made on the page and noted there. We do not silently edit a claim out of existence, because a site that quietly rewrites its own history is not a reference. The full correction policy is in the editorial policy.