Clinical Evidence, how RUSKI labels what we know

Finished-product panels test the sold formula on people under a defined protocol. They are the most relevant source for a product-level appearance claim, and they still have limits: size, duration, controls and who was enrolled. Ours are held on file and sent on request rather than summarised into a single absolute percentage.

Manufacturer or supplier dossiers describe an ingredient or complex as sold to formulators. They can justify why an active was chosen; they do not automatically prove your finished serum. Published studies (peer-reviewed journals) carry more weight when design and population match the claim, scalp-hair data does not silently become lash data. Consensus means established cosmetic-science agreement (for example, that humectants bind water) without a single proprietary trial behind every sentence.

S, Strong: direct, high-quality support for the specific appearance claim. M, Moderate: credible panels or studies with clear but manageable limitations. E, Emerging: early, small, supplier-led or adjacent-tissue data. T, Theoretical: mechanism or analogy only.

On product pages and in the Peptide Library, citations may carry an evidence-strength pill. If a citation has no explicit letter, we map published study and textbook consensus toward S, and manufacturer data toward E, then still ask you to read the limitation line.

Three serum pillars currently reference finished-product panels held on file: RL-LGS-001 (Peptide Lash Serum), RL-RRS-002 (Overnight Recovery Lash Serum) and RL-BDS-003 (Bioactive Density Lash Serum). Request them via the product page or contact form; we send the panel with its design notes and limitations rather than a marketing-only digest.

Panels describe appearance outcomes under the study conditions. They are not medicines trials, not Latisse equivalence, and not a guarantee of the same result for every wearer. Individual baselines, application consistency and eye-area tolerance all differ.

RUSKI claims stay appearance- and conditioning-based: lashes can look longer, fuller, denser or better conditioned. We do not claim to grow or regrow lashes, alter the growth cycle, treat disease, heal wounds medically, or match prescription prostaglandin products.

Prostaglandin analogues are a different evidence and risk class entirely, see the prostaglandin-free explainer. Peptide sequences and their honest labels live in the Peptide Library. For a longer narrative on what peptides can and cannot do, read Peptides for lashes.