Metal allergy is an allergic reaction that occurs when metal components in accessories, etc., dissolve due to sweat or moisture and come into contact with the skin.

Symptoms vary from person to person, but may include:

・Itching
・Redness
・Rash
・Stinging

Rings, in particular, are in contact with the skin for extended periods, making material selection very important.

In general, nickel and cobalt are known as metals that tend to cause metal allergies.

Patch tests performed by dermatologists also report a relatively high positive rate. These metals are often cited as causes of rashes and skin problems due to accessories.

On the other hand, silver and gold are considered materials that are relatively unlikely to cause allergic reactions.
However, in some cases, a skin reaction may rarely occur depending on one's constitution or if other metals are mixed in to make an alloy to increase the strength of the jewelry.


Furthermore, metal allergies can suddenly develop after prolonged contact with metal. Once an allergic reaction occurs, symptoms such as itching, redness, and rashes may repeatedly appear when touching the same metal again.


Therefore, when choosing jewelry, it is important to check not only the design but also what materials are used and what kind of processing has been applied.

At COIL, we apply a highly durable titanium coating to the surface of our rings so you can wear them with confidence every day.

Titanium is a material widely used in the medical field for applications such as artificial joints and medical devices. It is known for being relatively hypoallergenic and gentle on the skin.

For this reason, it is considered one of the safe materials for accessories that are in contact with the skin for extended periods.

Furthermore, the special titanium coating used by COIL forms a strong and highly adhesive protective film on the surface, which means it is:

・Scratch-resistant
・Discoloration-resistant
・Resistant to sweat and moisture
・Easy to maintain its beautiful condition for a long time

Because our products are meant to be worn every day, we are committed not only to design but also to being gentle on the skin and providing quality that can be cherished for a long time.

Rings are meant to be worn for a long time as part of your daily life.

At COIL, we value not only design, but also the ability to wear our rings comfortably and with peace of mind every day.

We want matching rings with your loved ones to feel even more comfortable.

With this in mind, we carefully finish each and every piece.