Every ranking published by British Skincare Journal follows the same process. This page sets out that process in full, so readers can judge our work on its merits.
Product selection and procurement
Products are chosen for testing on the basis of market share, reader interest and coverage of the main price bands (budget, mid-range and premium). All items are purchased anonymously, at full retail price, from ordinary shops and online retailers such as Boots, Superdrug, Look Fantastic, Marks & Spencer beauty halls and Amazon.co.uk. No manufacturer is informed of a test, provides samples or sees results before publication.
Evaluation framework
We assess products across four pillars, each carrying a fixed weight in the overall score:
- Effectiveness (40%) — measurable performance against the product’s stated purpose, evaluated through instrument readings and structured observation.
- Safety (30%) — ingredient-list review against current EU and UK regulatory guidance, irritation potential, allergen presence, and stability data where available.
- Application experience (20%) — texture, absorption, scent, ease of use, packaging practicality and day-to-day wearability, assessed by trained evaluators following a structured protocol.
- Label accuracy (10%) — whether the claims on the packaging and in marketing materials are supported by the evidence we gathered during testing.
Laboratory methods
Where the product category allows it, we supplement human assessment with instrument-based measurement. The techniques we use include:
- Corneometer readings — measuring changes in skin hydration before and after product application.
- Cutometer measurements — assessing skin elasticity and firmness.
- TEWL (transepidermal water loss) — evaluating barrier-function performance.
- Mexameter readings — quantifying changes in melanin and erythema.
- 3D surface profilometry — mapping changes in skin texture and fine lines.
Not every technique is used in every test. The protocol specifies in advance which measurements apply to the category under review.
Observation timeline
We do not publish snap verdicts. The minimum observation period for any comparative test is six months, with structured measurements taken at weeks four, eight, twelve and twenty-four. Products that claim cumulative benefits are tracked for as long as the claim requires.
Panel review and sign-off
Before any ranking is published, the raw data, methodology and draft conclusions are submitted to our Scientific Advisory Panel. At least two of the three panel members must approve the findings before an article may proceed to publication. The panel may require additional measurements, amended language or, in rare cases, a complete retest.
Independence policy
British Skincare Journal accepts no advertising from product manufacturers, no sponsored placements and no revenue from brands whose products we test. Our income comes from reader traffic and general advertising unrelated to the brands under review. This separation is non-negotiable.
Corrections
Careful methodology does not make us infallible. If a reader, manufacturer or fellow researcher identifies an error in our data or conclusions, we investigate promptly. Confirmed errors are corrected in the article, with a dated note explaining what changed and why. Corrections can be submitted through our contact page.