What level of decontamination kills most bacteria, viruses, and fungi?
Disinfection
What is the outer layer of hair?
Cuticle
What scale measures acidity and alkalinity?
pH scale
What is the outer layer of skin?
Epidermis
What is the visible part of the nail called?
Nail plate
What organization regulates workplace safety?
OSHA
What layer gives hair strength and elasticity?
Cortex
What is a substance with a pH below 7 called?
Acid
What is the middle layer of skin?
Dermis
What is the living skin at the base of the nail called?
Matrix
What is the lowest level of decontamination?
Sanitation
What gives hair its natural color?
Melanin
What is a substance with a pH above 7 called?
Alkaline
What is the deepest skin layer?
Subcutaneous layer
What is the skin under the nail plate called?
Nail bed
What must you do before and after every client?
Wash or sanitize hands
What determines how hair absorbs moisture?
Porosity
What bond is easily broken by water or heat?
Hydrogen bond
What is a small raised bump on skin?
Papule
What is the pale half-moon at the base of the nail?
Lunula
What type of disinfectant is required for salon tools?
EPA-registered disinfectant
What is the growth stage of hair?
Anagen
What bond is broken during chemical services like perms and relaxers?
Disulfide bond
What is a thick scar called?
Keloid
What test checks for allergic reactions to hair color?
Patch test