The science
The oil's active is tetrahexyldecyl ascorbate, and its evidence is real but comes from serums that declare their dose. A 2024 open-label study in the Journal of Cosmetic Dermatology of a serum containing tetrahexyldecyl ascorbate with acetyl zingerone reported improvement in the appearance of photoaging and uneven pigmentation over its course, and a 2026 study in the same journal evaluated a hydroquinone-free tetrahexyldecyl ascorbate antioxidant serum for hyperpigmented and photodamaged skin; both support the ester as a stable, tolerable vitamin C form with pigment and photoaging effects at formulated concentrations, and neither speaks to an undeclared dose at ninth position in a seed-oil base. The ester's advantage here is chemical rather than clinical: it is lipophilic and does not oxidise, so an anhydrous oil can carry vitamin C without the browning that ascorbic acid undergoes in water.
The seed oils are the bulk and the function. Raspberry seed oil supplies alpha-linolenic and linoleic acids in near equal measure with high tocopherol and ellagic acid content, cranberry seed oil a similar omega balance, pomegranate seed oil punicic acid, evening primrose gamma-linolenic acid, and black currant both gamma- and alpha-linolenic acids; together they form an occlusive, fatty-acid-rich film that reduces transepidermal water loss overnight, which is the mechanism behind the softer, less tight skin dry users report. Turmeric root extract carries curcuminoids with antioxidant and anti-inflammatory activity in the laboratory, and a 2016 systematic review in Phytotherapy Research of clinical evidence for turmeric and skin health found early support across several conditions while noting the small size and variable quality of the trials; at this position the extract's clearest contribution is colour. Bisabolol, ginger extract, cardiospermum and 4-t-butylcyclohexanol are established or plausible anti-irritants, and sunflower unsaponifiables and rapeseed sterols support the barrier.
The formula contains no added fragrance, alcohol, silicone or preservative beyond tocopherol and rosemary extract, but bitter orange flower oil is a fragrant essential oil and recognised sensitiser, and the seed oils are the components acne-prone and fungal-acne-prone skin may react to.
References 2 ShowHide
- Open-label topical application of tetrahexyldecyl ascorbate and acetyl zingerone containing serum improves the appearance of photoaging and uneven pigmentation — Journal of Cosmetic Dermatology (2024)
- Effects of Turmeric (Curcuma longa) on Skin Health: A Systematic Review of the Clinical Evidence — Phytotherapy Research (2016)