Ahnfeltiopsis Concinna Extract

Ahnfeltiopsis concinna extract is a red algae extract typically used at low concentrations (often <1–3%) for film-forming, humectant, and soothing/conditioning effects, and algae polysaccharide extracts are generally well-tolerated in sensitive-skin formulations. While robust clinical irritation datasets are limited for this specific species, reported issues are uncommon and the main risk is rare individual hypersensitivity or contamination-related impurities rather than inherent irritancy, supporting a very gentle score with routine patch-testing in highly reactive eczema patients. Safety Notes: Ahnfeltiopsis concinna (a red algae) extract is typically used as a minor active within marine/soothing/hydration blends in leave-on serums, creams, and masks, where it commonly appears at very low label-claim levels around 0.001–0.05% due to use as part of multi-extract complexes. Higher-strength consumer products (especially gel-creams, ampoules, and wash-off masks marketed around “algae extract” benefits) have been observed using single-algae extracts in the ~0.5–2.0% range; above this, cost, odor/color impact, and viscosity/sensory issues usually become limiting in real-world OTC formulations.