A contribution to a First Home Savings Account gets the adult a tax deduction but the account is designed to help fund their first home.
Any time YOU take money out of your own RRSP you will pay tax at your own highest tax rate, so not optimal to give to your child. But if you have surplus non-registered funds you could let them use it for the FHSA, or to contribute to their own TFSA.
https://www.canada.ca/en/revenue-age...s-account.html