Horizontal forehead lines, also known as forehead wrinkles or glabellar lines, are creases that form across the forehead due to repeated facial expressions and the natural aging process, resulting in reduced skin elasticity. These lines are a common concern for those seeking cosmetic treatments to combat aging. Botox injections are frequently used to relax the muscles causing these lines, leading to a smoother forehead appearance. Additionally, skincare products containing ingredients such as retinol, hyaluronic acid, and peptides can help diminish forehead lines by boosting collagen production and providing hydration to the skin over time.