There are several ways to lose a double chin. Here are some tips:

1. Diet: Eating a calorie deficit can reduce your overall body weight, which can help to cut excess fat around your body.
2. Exercise: There are several exercises that can help you lose your double chin such as straight jaw jut, neck stretch, and tongue stretch.
3. Face Yoga: Using regular Face Yoga workouts you can target underutilized muscles and help restore firmness and shape. And as your muscles activate and your collagen levels increase, you’ll find your double chin dissipating as your entire face receives a natural face-lift.
4. Natural treatments: This can be through diet and exercise, specific jaw exercises, and even yoga.

I hope this helps!