Agastache Mexicana Flower/Leaf/Stem Extract

Agastache mexicana (an aromatic mint-family botanical) extract is typically used at low percentages for soothing/antioxidant claims, but it can contain naturally occurring terpenes and phenolic compounds that are known triggers for irritant or allergic contact dermatitis in reactive and eczematous skin. While population-level irritation rates are usually low, the variability of plant extracts (batch-to-batch chemistry and potential residual processing solvents) and the sensitization risk seen with botanicals justify a moderate score, particularly for compromised skin where barrier disruption amplifies reactions. Safety Notes: In commercial skincare, Agastache Mexicana Flower/Leaf/Stem Extract is most often used as a soothing/antioxidant botanical at very low levels (commonly supplied in preservative carriers and dosed at ~0.01–0.3% active-equivalent), with the lowest observed use around 0.0005% in multi-extract blends where it serves a minor supporting role. Higher consumer-available strengths are seen in “calming/anti-redness” serums, ampoules, and mask essences where brands use the extract as a hero botanical, with finished-formula levels reaching about 1–2% in leave-on products; rinse-off products typically sit toward the lower end due to cost and reduced contact time.