Citrullus Lanatus Fruit Extract

Citrullus lanatus (watermelon) fruit extract is typically used at low concentrations as a humectant/antioxidant/soothing botanical, and it is generally well-tolerated in standard patch-test experience. However, as a complex plant extract (with variable sugars, organic acids, and trace proteins), it carries a small but real risk of irritation or allergic-type reactions in highly reactive or eczematous skin, especially when the barrier is compromised. Scoring it as gentle reflects low average irritancy while acknowledging non-zero sensitization potential inherent to botanicals. Safety Notes: In commercial skincare, Citrullus Lanatus (Watermelon) Fruit Extract is commonly used as a minor ‘label’ botanical in multi-extract blends or fragrance-associated complexes at very low levels (~0.0005–0.05%), especially in rinse-off cleansers and mass-market lotions. Leave-on serums, masks, and hydrating gels that position watermelon as a key story ingredient (often using glycerin/propylene glycol-based extracts) are typically formulated around ~0.1–2%. High-strength consumer-available products occasionally reach ~3–5% when the extract is used as a primary active story component, though levels above this are uncommon due to cost, stability/odor/color constraints, and diminishing sensory benefits.