Formal:
* Cariad a chusanau: This literally translates to "love and kisses" but is more formal and less common.
Informal:
* Cariad: This simply means "love" and is widely used as a friendly sign off.
* Cusan: This means "kiss."
* Cariad mawr: This translates to "great love" and is a more affectionate way to say "love."
* Hwyl fawr: This means "goodbye" but is a more intimate and affectionate farewell.
You can also combine these phrases, such as "Cariad a hwyl fawr" (love and goodbye).
Ultimately, the best way to say "love and kisses" in Welsh depends on the context and your relationship with the recipient.