Hi! For me, a good review is, at least, contains of the claim (so we can see if your experience meet the claim or not), some key ingredients, a few of notable things (if it contains fragrance or essential oils, etc), and then your experience of using it and your own pros and cons π Adding some price and the volume (so people could see if it's up to their budget or not) is fine too π
But it really has no rule, so you can add or do the way you like π
Hope it helps you a little π