It would turn purple because it is used in the house. So it is a household item.
since water is pretty neutral, the water does not change color but the universal indicator does. The universal indicator changes color as per the quantity of deionized water... But it changes to straw color or pale yellow in 50mL of deionized water.
The color is blue to violet.
brown
Each indicator has a specific change of color when the pH is changed.
Shampoos are lighty acidic, with a pH between 6 and 7; with the Merck pH paper art. 9565 the color can be a shade of green.
Shampoo is slightly acidic, If using universal indicator paper I would say light orange/yellow. This is because the acidity helps make the cuticle smoother, making the small overlapping scales on the hair lie flat.
It would turn purple because it is used in the house. So it is a household item.
It turns red because shampoo is a base.
purple or blue
Certain shampoos can strip the color from hair by removing the color molecules. It is important to use shampoos that are specifically formulated for color-treated hair to help maintain the vibrancy and longevity of the color. Look for products that are sulfate-free and designed to be gentle on colored hair.
American Crew Daily Shampoo as menthol and also fragrances in itwhich means it has scent. Shampoo will have effect on hair color, after repeated use.
Orange, low acidic substance.
This indicator changes his color.
blue
A Shampoo Cap is one half mixed color solution plus one half shampoo. It is used for refreshing faded or dull hair color.
There is no darkening shampoo, only the washout color.