Artemia Extract

Artemia extract (brine shrimp-derived) is typically used at low concentrations as a soothing/anti-stress, antioxidant-supportive adjunct, and it is generally well tolerated in standard patch-test experience with low reported irritancy. However, as a biologically derived extract containing mixed components, there is a small but real risk of irritation or idiosyncratic reaction in highly reactive or eczema-prone patients, especially when the barrier is compromised. Scoring it as very gentle (rather than exceptionally gentle/inert) reflects that low but nonzero sensitization/irritation potential. Safety Notes: In commercial skincare, Artemia extract (often supplied as a plankton/Artemia lysate or oligosaccharide solution) is commonly used at very low levels as a bioactive/anti-stress claim ingredient in leave-on serums and moisturizers, with effective in-market use starting around ~0.0005–0.01% active (often appearing mid-to-late INCI due to dilution in the supplier blend). Higher-strength consumer-available “booster” style anti-pollution/anti-fatigue products and concentrated ampoules can reach ~0.5–2% when the extract is used as a primary featured active, although stability/odor/color and cost typically limit levels above this in finished OTC formulas. Rinse-off products generally sit at the low end because contact time is short and extracts are used mainly for marketing/skin-feel claims.