Chill your martini glass in the freezer for a few minutes or fill it with ice water to chill while you prepare the cocktail.
In a cocktail shaker, add the caramel vodka, caramel liqueur, half-and-half or heavy cream, and caramel syrup.
Add a pinch of sea salt to the shaker. Be cautious not to overdo it; you can always add more salt later if desired.
Fill the shaker with ice cubes, leaving some room at the top.
Secure the lid on the shaker and shake vigorously for about 15-20 seconds until the mixture is well-chilled and frothy.
Empty the ice water from the Martini glass, or remove the chilled glass from the freezer.
Optionally, drizzle some caramel sauce inside the Martini glass, allowing it to drip down the sides.
Strain the Salted Caramel Martini mixture into the prepared Martini glass.
If desired, sprinkle a few sea salt flakes on top of the drink for an extra touch of saltiness.
Serve immediately, and savor the rich, sweet, and slightly salty indulgence of this Salted Caramel Martini.