What is the cost per ounce? Who is the manufacturer? Is the product waterproof? How much protection does it provide?
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: When buying a sunscreen, which is the best question to keep in mind while reading the label for maximum effectiveness?
Possibilities:
- What is the cost per ounce?
- Who is the manufacturer?
- Is the product waterproof?
- How much protection does it provide?

How much protection does it provide?