DSG A5 book 2

Mucosal Membranes consisting of layers of epithelial cells that line various
membranes cavities in the body and cover the surface of internal organs.
Nanotechnology Continuous with the skin at certain openings of the body.
Natural moisturising
factor The manipulation of matter on a nanoscale at the atomic,
Neurotoxic molecular, and supramolecular level.
Non-comedogenic
Occlusive A group of substances produced in the epidermis that draws
water from the immediate environment and is responsible for
Oedema providing adequate hydration to the stratum corneum.
Parabens
pH Poisonous to nerves or nerve tissue.
Phthalates
Does not block pores or cause breakouts.
Polyhydroxy acid
Psoriasis A material or ingredient that when applied to the skin forms a
protective film, reducing the loss of water from the skin into the
Stratum corneum external environment.

Transepidermal Swelling of the skin.
water loss
Toxicology Preservatives used to prolong the shelf life of cosmetic and
pharmaceutical products.
Triglycerides
pH stands for potential of hydrogen and is a scale used to specify
how acidic or basic a water-based solution is.

A group of chemicals used to soften and increase flexibility of
plastic and vinyl in consumer products. Also used in synthetic
fragrance as a solvent.

A group of materials that work to exfoliate the skin and promote
desquamation.

A skin condition that speeds up the life cycle of skin cells,
causing cells to rapidly build up on the surface of the skin. The
build-up of the excess skin cells can form scales on the skin,
which can feel dry, painful and itchy.

The outermost layer of the epidermis, consisting of dead cells
known as corneocytes. The stratum corneum forms a barrier
to protect the underlying tissue from dehydration, infection and
environmental stress.

The process by which water passes from the dermis through to
the epidermis and evaporates from the surface of the skin to the
outside environment.

The discipline combining biology, chemistry, pharmacology
and medicine that involves the study of the adverse effects of
chemical substances on living organisms.

A type of lipid (fat) found in the blood composed of glycerin,
caprylic & capric fatty acids.

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