Questions & Answers about Этот крем помогает увлажнять сухие руки.
Because этот has to agree with крем.
- крем is a masculine singular noun.
- The demonstrative этот means this for a masculine singular noun in the nominative case.
So:
- этот крем = this cream
- эта would be for a feminine noun
- это would be for a neuter noun
Крем is in the nominative case because it is the subject of the sentence — the thing doing the helping.
So the structure is:
- Этот крем = subject
- помогает = verb
- увлажнять сухие руки = what it helps do