Tripleurospermum Maritimum Extract

Tripleurospermum maritimum (sea mayweed) extract is a botanical soothing/anti-inflammatory agent typically used at low concentrations in leave-on products, but it is in the Asteraceae family and can trigger irritant or allergic contact dermatitis in sensitized individuals. Patch-test data for related chamomile/mayweed constituents show occasional reactions, especially in eczema and highly reactive skin, so despite its “calming” marketing I rate it as mildly irritating with a non-trivial sensitization risk in vulnerable patients. Safety Notes: Tripleurospermum maritimum (sea mayweed) extract is typically used as a soothing/anti-redness botanical and is often dosed very low in mass-market moisturizers and cleansers (especially when part of a broader botanical blend), with practical commercial lows around 0.0005–0.01% in finished formula. Most leave-on sensitive-skin products cluster around ~0.05–1% depending on extract type and standardization. High-strength consumer serums and targeted calming concentrates have been marketed with multi-percent botanical loadings; an observed upper end for OTC products is about 3–5% (higher levels become limited by solubility, odor/color, and stability), with rinse-off products generally sitting lower due to reduced deposition.