
The armpit is a junction between the arm and chest wall, containing fat deposits, hair follicles, sweat glands, and delicate skin. Genetics and hormonal factors often determine fat storage in this area, making underarm fullness resistant to diet and exercise.
Hair growth in the axilla can be dense and recurrent, leading many to seek long-term hair reduction for comfort and hygiene. In some individuals, overactive sweat glands may also contribute to moisture and irritation, compounding underarm concerns.