The internationally recognised gold standard for measuring skin penetration — the same method used by pharmaceutical companies worldwide. PRFRM Cream was tested across 24 hours against the OECD TG 428 standard. The active ingredients penetrated through every layer of the skin - stratum corneum, epidermis, and dermis. The lab verdict was clear: PRFRM Cream meets the transdermal design requirements of external sports care products.

dOFM measures real-time ingredient movement in the fluid layer of the dermis - directly adjacent to the body's circulatory supply to muscle. Concentration built from the very first sample, reached steady state quickly, and held throughout the full test window. Zero irritation. Zero redness. Zero structural change to the skin at every single time point.

Microdialysis places a probe beneath the skin to measure the fluid sitting directly between cells in local tissue - the environment surrounding muscle during exercise. Within minutes of application, PRFRM Cream's active ingredients were already detectable in that fluid. They built to a stable, sustained concentration and held it throughout the full testing period. The ingredients don't just cross the skin - they accumulate where effort happens and stay there.

Raman spectroscopy uses laser technology to identify the molecular fingerprint of specific compounds inside biological tissue without damaging it. When applied to PRFRM Cream, the active ingredients were confirmed present inside the skin - chemically intact and unchanged from the original formula. This level of molecular verification is rare in the topical sports category. PRFRM has it.