Daucus Carota Sativa (Carrot) Seed Oil at position 16 contains psoralen and other phototoxic furanocoumarins. The SCCS has noted phototoxicity risk for cosmetic products containing furocoumarins in leave-on products applied before UV exposure. The periorbital skin (around the eye) is approximately 40% thinner than regular facial skin and more vascular, meaning ingredients absorb faster and more completely in this area than elsewhere on the face. Applying a product containing phototoxic compounds near the eye before sun exposure is therefore a heightened risk compared to the same ingredients applied on the cheek or forehead. Citrus Reticulata (Mandarin) Peel Extract at position 13 carries a similar furanocoumarin phototoxic risk. Benzyl Alcohol serves as both a preservative and an EU-listed fragrance allergen in this leave-on product, with the dual role not communicated on the product page. Acetyl Hexapeptide-8 and Caffeine are both well-characterised and safe. Undecane and Tridecane are high-purity synthetic alkanes with established safety profiles.

Undecane and Tridecane are a thoughtful choice for eye area emolliency. These lightweight linear alkanes spread easily and provide excellent surface emolliency without the heaviness of fatty acid esters, which can contribute to milia (small hard cysts) under the eye over time. Caffeine at 3% is well-evidenced for reducing periorbital puffiness and dark circles. It works by blocking adenosine receptors and inhibiting phosphodiesterase, which reduces histamine-driven capillary permeability and improves microcirculation in the under-eye area. Acetyl Hexapeptide-8 (also known by the trade name Argireline) at 3% is at the lower end of the range (3-10%) that has been shown to reduce expression line depth in clinical studies. It works by competing with a natural protein complex (SNARE) at the point where nerve signals trigger muscle contraction, temporarily reducing the depth of repeated muscle-driven lines. Carrot Seed Oil's furanocoumarin content is a specific concern for daytime use given the thinness of the periorbital skin.

The 3% concentrations for vitamin C, Acetyl Hexapeptide-8, and Caffeine are all disclosed by the brand. The full INCI list is published on the product page. No clinical study data has been published for this specific formula. The phototoxic furanocoumarin risk from Mandarin Peel Extract and Carrot Seed Oil is not communicated to consumers, and neither is the context that the periorbital skin absorbs ingredients more rapidly than the rest of the face due to its thinness and vascularity. Acetyl Hexapeptide-8 is not identified by its widely recognised trade name, Argireline, on the product page - consumers familiar with peptide ingredients may not realise this is the same compound.

Plum is certified 100% vegan and PETA cruelty-free. The brand does not sell into markets requiring mandatory animal testing. Undecane and Tridecane are petrochemical-derived alkanes. Carrot Seed Oil's phototoxic furanocoumarin content varies depending on the source and extraction method - the specific purity or processing of the oil used here is not disclosed. Rose and Mandarin extracts are botanical by-products. Sucralose is a synthetic compound.