phenomenon. Over the years, skin loses collagen and elasticity , two essential components for maintaining its firmness. As it becomes thinner and less resilient, it more easily reveals internal structures, such as veins. This process is often particularly noticeable on the hands , an area where the skin is naturally more delicate and is constantly exposed to external factors like the sun and daily use.
High temperatures can also explain why veins appear more prominent at certain times. When it’s hot, the body activates mechanisms to regulate its temperature, including the dilation
