Collagen supplementation can benefit most adults, but results vary depending on age, lifestyle, diet, and individual biology. Clinical studies show that daily intake of hydrolysed collagen peptides can improve skin hydration, elasticity, reduce wrinkles, and support joint and connective tissue health, but the degree of effect differs between individuals. While some people see noticeable improvements in 4–12 weeks, others may experience slower results. Overall, research supports collagen’s role in skin, hair, nail, and joint health, but consistency and long-term use are key for optimal benefits.