Rubus Chamaemorus Fruit Extract

Rubus Chamaemorus (cloudberry) fruit extract is primarily a botanical antioxidant/skin-conditioning agent typically used at low percentages, but as a complex plant extract it contains multiple bioactive compounds (including organic acids and polyphenols) that can sting or irritate reactive or barrier-impaired skin. Clinical patch-test data for this specific extract is limited, so patient-safety assessment must rely on class behavior of fruit/botanical extracts, which show occasional irritant or allergy-like reactions in eczema-prone populations, especially when layered with other actives. Given the uncertainty and the higher vulnerability of compromised skin, a mild-but-nontrivial irritancy score is most defensible. Safety Notes: In mass-market leave-on skincare, Rubus Chamaemorus (cloudberry) fruit extract is often used as a minor antioxidant/marketing botanical at very low levels (typically via a standardized extract or pre-blend), with observed use down to ~0.0005% in multi-extract systems. More prominent “cloudberry” serums/creams and natural-brand formulas commonly run ~0.1–1% extract, while the upper end in consumer-available products is typically ~3–5% in high-botanical, leave-on emulsions or gel-serums before cost, color/odor, and stability constraints become limiting; rinse-off products generally sit toward the low end due to brief contact time. No specific FDA/EU maximum is set for this INCI, so practical formulation/stability and supplier recommended use levels primarily define the market ceiling.