Terms worth defining properly.
Concepts and mechanisms referenced across our Lab Notes — plainly explained, one click away from any article that uses them.
9 terms defined
The skin's naturally slightly acidic surface film (pH 4.5-5.5) that helps protect against bacteria and supports the skin barrier.
A general class of plant-derived cosmetic materials; individual botanicals require their own INCI identities.
Bromide is a mineral constituent of some highly mineralized brines and salts, including Dead Sea brine.
A botanical material used in cosmetics; the correct INCI identity depends on the preparation supplied.
A general class of cosmetic colouring materials; the correct INCI name depends on the specific pigment or dye.
A class of concentrated aromatic plant materials; each essential oil has its own INCI identity and safety considerations.
A botanical rose material used in cosmetic formulations; the correct INCI depends on whether it is flower, extract, oil or another preparation.
The outermost layer of skin - dead keratinised cells and lipids that form the primary barrier against water loss and irritants.
TEWL - the amount of water that passes out through the skin. Higher TEWL indicates a more compromised skin barrier.