If you review a document, it means you read it and examine it (and maybe have some ideas to improve it) - but you don't make any changes.
If you revise a document, it means you change the text to correct errors or make improvements.
When preparing for a test, it's a good idea to study the material again in order to refresh your memory. American English speakers say you are reviewing for the test. British English speakers say you are revising for the test.
Elderberries are perfect for diets for healthy skin, especially if you're looking for a natural acne remedy. The antioxidants are effective in preventing human cell damage, giving skin a glowing and healthy look. It clears your complexion and dark spots, and you look young for long as it delays the occurrence of fine lines.