Question

1. what does a higher ph rating indicate about a shampoo?
2. which type of shampoo—slightly more alkaline or slightly more acidic—most closely matches the ideal ph of hair?
3. what are two possible effects of using a high ph shampoo?

Explanation:

1. The pH scale ranges from 0 - 14. A higher pH (above 7) indicates the shampoo is more alkaline.
2. The ideal pH of hair is slightly acidic (around 4.5 - 5.5), so a slightly more acidic shampoo matches it better.
3. Using a high - pH (alkaline) shampoo can cause the hair cuticle to lift, making hair more prone to damage and frizz, and can also strip natural oils from the hair.

Answer:

1. It indicates the shampoo is more alkaline.
2. Slightly more acidic.
3. Hair cuticle lifting, stripping of natural oils.