The science
Physical exfoliation removes the loosely attached outermost corneocytes that have not yet shed, reducing surface roughness and briefly improving penetration of whatever is applied next; the effect is transient, since the corneum regenerates within days, and it is non-selective, so pressure or frequency beyond what the loose cells require abrades intact corneum and provokes irritation. This scrub's abrasive is milled pumice at second position, angular volcanic glass, with quartz and a softer Bambusa arundinacea stem powder, and it rides on the brand's mild surfactant system of sodium lauroamphoacetate, sodium methyl cocoyl taurate and coco-betaine, low-irritancy surfactants that bind less to corneum protein and extract less lipid than sulfates, which is the appropriate pairing for a product that already stresses the barrier mechanically.
The aromatic phase is Siberian fir, Scots pine leaf, rosemary, cedarwood bark, clove flower and sage oils, with limonene and eugenol declared above labelling thresholds. Eugenol is a component of the standard fragrance mix used in patch testing and a well-established contact sensitiser; limonene forms hydroperoxides on air exposure that are more sensitising than the parent terpene, a consideration for a tube that lives in a warm bathroom. The question of how botanical essential oils relate to fragrance allergy in practice, whether a patient sensitised to a constituent such as eugenol or limonene needs to avoid the whole oils that contain them, was reviewed in 2026 in Contact Dermatitis, and the practical conclusion for an abrasive rinse-off is straightforward: the scrub opens the barrier before the oils arrive, so a sensitised person's exposure is greater than the rinse-off format suggests, and the product should be avoided by anyone with a relevant patch-test result or atopic tendency. The gel is thickened with an acrylates copolymer and sodium chloride, preserved with 1,2-hexanediol, phenoxyethanol, sodium benzoate and ethylhexylglycerin, and contains no oils beyond the aromatics, no plastic microbeads, sulfates, silicones or parabens; Aesop states all its products are vegan, and no study of the scrub has been published.
References 1 ShowHide
- To Avoid or Not to Avoid: Cross-Reactivity Between Fragrance and Common Botanicals — Contact Dermatitis (2026)