Corallina Officinalis Extract

Corallina Officinalis Extract is a red algae extract used mainly for soothing/antioxidant and film-forming benefits, typically at low concentrations, but botanical/marine extracts have a measurable rate of irritant or allergic-type reactions in sensitive and eczematous skin. While not a potent active, its complex mixture of proteins, polysaccharides, minerals, and residual processing impurities can trigger stinging or dermatitis in reactive individuals, so I rate it as mild rather than “gentle.” Safety Notes: In real-world INCI-listed skincare, Corallina Officinalis Extract is most often used as a marine/botanical supportive extract in leave-on moisturizers, serums, and masks at low 'label claim' levels around 0.01–0.5%, with rinse-off cleansers typically sitting at the very low end due to short contact time. Higher-strength consumer products marketed around marine algae/exfoliation/firming can push dedicated extract usage into the ~1–5% range depending on extract form (often glycerin/water solutions or powdered extracts), with 5% representing the upper end seen in OTC products before texture, odor/color, and stability constraints usually become limiting.