Answer:
4. For me, whoever is that endorser, I'll not easily influence to it. The main here is the product, I'll check the product if it's good or not, if I like it then I like it. If I don't then don't. Whoever endorse the product is not a problem anymore, the important here is the product you will use if it's reliable or not. Safety first.
5. Yes, it's important to check, it's for your own good anyway.
Some products claims true while others is not, it's okay as long as it don't harm me or anything.
