Depends on the particular product, for example if it's a skincare product I would trust the reviewer it it's someone who's knowledgeable on it.

Alongside consumers reviews would give me a better idea when making a decision

Author may give views but then they should not be considered as the gospel

Yes but depending if the author knows what he or she is talking about

For me only if the author is well certified in the field

Yes definitely. It helps us make decisions while buying

If I can trust the author is giving an honest opinion

yea, to find out if the author is biased or not

Yes, only from a reputable source.

Yes, also if it’s a new product