Which Generally Does NOT Need to Be Proven Safe and Effective

Q137: The color of human hair depends partly

Q138: Sodium carbonate (Na₂CO₃)and potassium carbonate (K₂CO₃)react with

Q139: Water softeners<br>A)remove "hard" ions.<br>B)destroy "hard" ions.<br>C)modify "hard"

Q140: A perfume's fragrance is just a bit

Q141: The universal pigment used in paint today

Q143: The only necessary ingredient in shampoo is<br>A)water.<br>B)conditioner.<br>C)fragrance.<br>D)detergent.

Q144: The two main types of laundry bleaches

Q145: Most aftershaves contain about 50 - 70%<br>A)methanol.<br>B)2-propanol.<br>C)ethanol.<br>D)acetone.

Q146: Baking soda can be used as<br>A)an automatic

Q147: Optical brighteners are often added to<br>A)detergents.<br>B)soaps.<br>C)cosmetics.<br>D)They are