*Be sure to read Our Mission. It outlines the conduct of this experiment and explains what we tested for.
»Medium and Frizzy Hair: We hypothesize that L’Oreal Vive Smooth Intense will work best, because it is specially formulated to control wild, frizzy hair and because its main purpose is to make frizzy hair smoother. We feel this is a pretty obvious choice counting on the commercials and promises being correct.
»Fine and Oily Hair: We feel that Herbal Essences Replenishing Shampoo will work best for fine and oily hair. It claims to be able to replenish damaged and dried hair so it might add some extra body to limp hair.
»Thick and Dry Hair: We believe that Head and Shoulders Hydrating Smooth and Silky will work best. Head and Shoulders Shampoo is best known for fighting dry scalp and the supposedly beneficial hydration will most likely tame thick, dry hair.
- Vive Smooth Intense Shampoo Bottle
- Herbal Essences Replenishing Shampoo Bottle
- Dove Beautifully Clean Shampoo Bottle
- Head & Shoulders Hydrating Smooth and Silky Shampoo Bottle
- Garnier Fructis Fortifying Shampoo Bottle
- Exact for Normal Hair Shampoo Bottle
Manipulated Variables: type of shampoo used and types of hair
Controlled Variable: the number of washes with each shampoo
Responding Variable: how well the shampoo worked... or its wow factor
After the 12 week period these were our ratings and comments about each shampoo for each hair type.
Here are the Comments: (for just the winners and an overall chart/table look below)
-Vive Smooth Intense
-Dove Beautifully Clean
-Head and Shoulders
And now without further ado the category winners are:
Medium and Frizzy Hair: Vive Smooth Intense
Fine and Oily Hair: Vive Smooth Intense
Thick and Dry Hair: Garnier Fructis for Dry and Damaged Hair
For a chart with all of the scores- click here
For a table with all of the scores- click here
Sources of Error
For Fine and Oily hair on the Exact weeks the rating is only for the first 1.5 weeks. Exact gave our test subject split ends and she was shamefully condemned into getting her hair cut and they washed her hair before cutting it with some fancy salon brand. So in order to keep the experiment relatively consistent we didn't use the last 3 days.
After researching the pH levels we wondered what effected shampoo has on water supply considering that water has a pH of 7 or neutral and that shampoo has a pH between 4 & 9. How would they get it back to neutral without tainting the supply?