JawEffort · MediumEasy

Hard Mastic Gum

Hypertrophy your masseters

1.6k

5.0(1)

1,876 upvotes · 240 downvotes

Chewing extremely firm mastic or Falim gum trains the masseter and temporalis muscles. Over months it can create the sought-after square, wide jaw look — like progressive overload, but for your face.

Reviews

What the community says

1 verified voice, averaging 5.0 of 5.

Sloan

Jul 22, 2026

My masseters became visible in 6 weeks. Game changer.