The science
The evidence for this emulsion lies in its vehicle. Macadamia seed oil is rich in oleic and palmitoleic acids, the latter unusual among plant oils and close to the sebum lipid profile, and it functions as an effective emollient; the 2017 International Journal of Molecular Sciences review of topical plant oils covers the emollient and barrier-support roles of oleic-rich seed oils of this kind. Hydrogenated lecithin, a phospholipid emulsifier, allows a lamellar-gel structure in which lipids are arranged in bilayers resembling the stratum corneum's own, and such emulsions show improved moisturisation and reduced transepidermal water loss relative to conventional oil-in-water creams in formulation studies; this is the plausible basis for the cushioned, long-lasting comfort users describe. Panthenol, tenth, has good evidence for increasing hydration, reducing irritation and supporting barrier recovery, and methyl gluceth-20 and glycerin are established humectants. Squalane is a skin-identical emollient with a long safety record, and the two silicones spread the lipids into a smooth, non-occlusive film with a subtle optical glow.
The barrier lipids and the orchid are present at label-minimum positions. Ceramide NP, cholesterol and glycolipids in physiological ratios can improve barrier function when delivered at meaningful concentrations, but at eighty-sixth to eighty-eighth of eighty-nine they cannot be credited with that effect. Dendrobium candidum polysaccharides and flavonoids have antioxidant and moisturising activity in laboratory and animal models, with no published clinical study on human skin, and at eighty-fourth the extract is a token. Ginseng, Phellinus linteus and the fifty-odd Cheongibidan herbs have laboratory data on individual constituents and no clinical evidence as a topical blend; velvet antler and oyster shell have none.
The risk is fragrance on mature skin. The lotion's perfume is undeclared beyond the word on this label but shares its composition with the balancer, which names six of the twenty-six labelled allergens studied in the 2017 Contact Dermatitis multicentre patch-test series; denatured alcohol at twenty-ninth modestly increases penetration; and chrysanthellum, an Asteraceae extract, and soybean extract are recognised sensitisers. Myristic acid and cupuaçu butter are the components with the most comedogenic potential for acne-prone users.
References 2 ShowHide
- Anti-Inflammatory and Skin Barrier Repair Effects of Topical Application of Some Plant Oils — International Journal of Molecular Sciences (2017)
- Non-mix fragrances are top sensitizers in consecutive dermatitis patients - a cross-sectional study of the 26 EU-labelled fragrance allergens — Contact Dermatitis (2017)