MOLLY RETTELL
A Hairy Experiment!
!
The purpose of my
experiment was to find out how
different types of bleaching
products effect hair color. My
hypothesis was if I put hair in
w h i t e v i n e g a r, h y d r o g e n
peroxide, and lemon juice, than
the lemon juice will have the
biggest bleaching effect
because many people have
used it and said that it has
worked.
!
To do this, I needed
materials such as one bottle of
lemon juice, one bottle of
hydrogen peroxide, one bottle
of white vinegar, three small
Ball jars, and three locks of real
hair. I took the three small Ball
jars and filled one jar with 1/2 of
a cup of lemon juice. I did this
the same for the other two
liquids. Next, I took pictures of
each lock of hair, and put
them in the three jars. After
four days, I took the hair out
and let it out to dry. After it had
dried, I took many pictures of
t h e h a i r. T h i s w a s m y
procedure.
!
In my experiment, the
dependent variable (the thing I
tested/changed) was the hair
because it was changing
c o l o r. T h e i n d e p e n d e n t
variable was the different
liquids I used. The controlled
variable was the amount of
hair and liquid, and the size of
the jar.
!
My results turned out
different than I thought. After
three days, the hydrogen
peroxide was the lightest and
was silky and soft. The lemon
juice had lightened up a little,
but was still a darker brown. It
was silky, but not as soft. The
white vinegar seemed darker
and was sticky.
!
For my conclusion, my
data did not support my
hypothesis. The hydrogen
peroxide was the lightest
compared to the lemon juice
and the white vinegar. I
learned that hydrogen
peroxide has oxidizing
properties, similar to bleach.
If I were to lighten my hair, I
would use hydrogen peroxide
instead of lemon juice or
white vinegar.
!