How we scored it
Stem extract: all mass is plant-derived compounds; extraction solvent leaves no mass. Natural 1.0 / total 1.0 = 1.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.
Where it comes from
Stems and twigs of the toothbrush tree are extracted with water or an alcohol/glycol solvent and concentrated. No synthetic route exists, and any carrier solvent is declared separately on the label.
In plain English
An extract of the stems of the toothbrush tree (miswak), a shrub of Africa and Asia whose twigs are traditionally used as chewing sticks. It is listed as an astringent, meaning it gives skin a tightening feel.
CosIng definition: Salvadora Persica Stem Extract is the extract of the stems of Salvadora persica, Salvadoraceae.
References
- 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
- 2SALVADORA PERSICA STEM EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3SALVADORA PERSICA STEM EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SALVADORA%20PERSICA%20STEM%20EXTRACT