Lonicera Caprifolium Flower Extract

Lonicera caprifolium (honeysuckle) flower extract is typically used at low concentrations as a botanical antioxidant/soothing agent, but it contains naturally occurring fragrant constituents that can act as irritants or allergens in reactive and eczematous skin. Patch testing and clinical experience with fragranced botanicals show a meaningful minority of sensitive patients can flare, especially with compromised barriers or when layered with other actives. Given the sensitization potential inherent to aromatic plant extracts and the need to err on safety for eczema-prone users, a moderate irritancy score is appropriate. Safety Notes: In commercial skincare, Lonicera caprifolium (honeysuckle) flower extract is most often used as a minor botanical/antioxidant component or as part of a preservative-support blend, where it can appear at trace to very low levels (~0.001–0.05%) in both leave-on and rinse-off products. Dedicated “botanical-heavy/clean beauty” toners, essences, and serums sometimes include honeysuckle extract as a featured extract or within concentrated extract complexes, with typical supplier use levels and observed INCI positioning supporting ~0.5–2.0% for consumer products. Above ~2% is uncommon in OTC due to cost, odor/color impact, and increasing irritation/sensitization risk typical of higher botanical extract loads.