HOW WE CHECK
Cosmetic marketing thrives in the gray zone between pharmaceutical law and consumer optimism. Here is the exact hierarchy of evidence we use at funalmanacbopl.skin to evaluate every ingredient, sunscreen filter, and packaging claim.
CHECK THE CLAIMOUR HIERARCHY OF COSMETIC EVIDENCE
When a beauty brand says an ingredient is "science-backed," that phrase can mean anything from a rigorous double-blind human study to an unpublished brochure from a raw-material distributor showing that a plant extract changed gene expression in submerged mouse cells. We classify cosmetic evidence into four distinct tiers:
Independent Human In Vivo Trials (Vehicle-Controlled)
Randomized, double-blind human studies (often split-face design) where the active formula is tested against the exact same base lotion without the active ingredient. Without a vehicle control, researchers cannot tell whether wrinkle improvement came from the advertised peptide or simply from the glycerin and petrolatum base.
Instrumental Biophysical & Ex Vivo Human Skin
Studies using Franz diffusion cells on excised human skin to measure actual stratum corneum penetration, or open-label human studies using objective instruments (Corneometer, Tewameter, Chromameter, optical profilometry) over 4 to 12 weeks.
In Vitro Cell Culture & Supplier White Papers
Fibroblast or keratinocyte monolayer assays conducted in petri dishes. Because cultured cells lack a protective stratum corneum barrier, in vitro success does not prove that a topical cream can deliver the molecule into living human skin.
Consumer Perception Surveys
"92% agreed skin felt softer." Useful for evaluating sensory texture and fragrance pleasantness, but provides zero evidence of biological or structural efficacy.
PRIMARY REFERENCE STANDARDS WE CONSULT
Rather than relying on retail ingredient "clean/dirty" traffic-light apps—which frequently confuse intrinsic hazard (what a chemical can do if swallowed in massive industrial quantities) with risk (actual human exposure from a 0.5% topical cream)—our editors cross-reference primary toxicological and regulatory dossiers:
- EU Scientific Committee on Consumer Safety (SCCS): Detailed quantitative safety opinions calculating the Margin of Safety (MoS) based on systemic exposure dosage (SED) and No Observed Adverse Effect Levels (NOAEL).
- Cosmetic Ingredient Review (CIR) Expert Panel: Peer-reviewed safety assessments of cosmetic raw materials as used in commercial concentrations.
- EU CosIng & Personal Care Products Council (PCPC) INCI Dictionary: Standardized chemical definitions, CAS numbers, and Annex restrictions.
- Peer-Reviewed Journals: Journal of Investigative Dermatology, International Journal of Cosmetic Science, British Journal of Dermatology, and Photodermatology, Photoimmunology & Photomedicine.
Independence Disclosure: funalmanacbopl.skin accepts no paid product placements, affiliate commissions, or brand-sponsored white papers. If you spot a factual error or newly published clinical study that alters one of our dossiers, please submit a claim audit request.