1
The innermost layer of hair:
medulla
The coloring matter that provides the natural color to our hair and skin:
melanin
Chemistry is the science that deals with the composition, structures, and properties of:
Matter
This type of lightener is available in cream, oil and some powder forms:
on the scalp lighteners
Non-oxidative haircolor does not change the hair chemically and is used to:
darken color, add subtle tone, and impart shine
A neutron is a ___________ particle with zero electrical charge and a mass equal to that of a proton:
neutral
Hair as it grows out from the scalp that has not been chemically treated:
new growth
The branch of chemistry that deals with products containing carbon:
organic chemistry
Quick lighteners are another name for:
off the scalp lighteners
Molecules are two or more atoms _______________ joined, and retain their chemical and physical properties to form matter:
chemically
Natural hair dye is a non-professional haircolor, also known as:
vegetable hair dye
A patch test displaying rash, hives, swelling or inflammation has a _______________ reaction:
positive
Oxidative haircolor creates a chemical change in the hair, providing ______________ haircolor results:
longer lasting
A chemical reaction in which the oxidizing agent is reduced, and the reducing agent is oxidized:
oxidation-reduction, redox
The chemical reaction in which oxygen is added to an element or compound:
oxidation
Potential hydrogen (pH) is the concentrated amount of hydrogen ions in a solution containing:
Water
Pheomelanin produces ____________ pigments in the hair:
yellow to red
Pigment is what gives color its color; its source can be natural, mineral or:
Chemical
The strongest category of haircolor that can deposit and lighten natural pigments:
permanent
Primary colors consist of:
red, yellow, blue
Diffusing or lifting the natural hair color to achieve the desired end result:
pre-lightening
Increasing the porosity of the hair by opening the cuticle and allowing for more pigment to be absorbed:
pre-softening
A 24 to 48 hour test to check for sensitivity and/or allergic reaction:
predisposition
Redox is also known as:
oxidation-reduction
Protons are particles in an atom that have a:
positive charge