Eyebrow serums are cosmetic products designed to enhance the growth and appearance of eyebrows. They typically contain a blend of nourishing ingredients, such as vitamins, peptides, and botanical extracts, which aim to strengthen hair follicles and promote fuller, healthier brows. Many users apply these serums daily to achieve desired results over time. These serums are often marketed as a solution for sparse or thinning eyebrows, which can occur due to various factors like over-plucking, aging, or hormonal changes. While results can vary, consistent use may lead to improved eyebrow density and overall appearance.