Wearing a watch chain for a long time may cause the wrist to turn black. What is the reason for this? Both metal and leather straps have a benchmark. Leather watch straps have specific quality requirements that cannot fade or discolor, but metal watch straps belong to the category of surface electroplating, and only the bonding strength of the electroplating coating is specified.
What is the reason why wearing a watch strap for a long time can cause the wrist to turn black?
Leather watch straps are more prone to color fading and staining after being soaked in water due to moisture, but the inner side of leather watch straps is generally lighter in color.
Stainless steel watch straps will not fade, only some coated metal watch straps will have color fading, which are usually low-end products. Straps with electroplating on the surface may experience surface corrosion over long-term use, and in severe cases, they may exhibit surface mottled and green rust, which can also ‘transfer’ to the wrist.
The reason why wearing a watch strap turns black is mostly caused by dust and sweat, which also depends on individual circumstances, such as work environment, nature of work, whether individuals are more prone to sweating, and the form of wearing the strap.
The hollowed out watch strap is more prone to “dirt and grime”. Dust, fibers, and mixed sweat will fill all the gaps in the strap. In summer, once the wrist sweats or becomes wet, dirt will dissolve and adhere to the skin of the wrist, forming black spots.
