About metal allergy
Solid Love products do not use substances that cause metal allergies.
You can wear all products with confidence.
This page provides a general explanation of "metal allergy."
Metal Allergy
Metal allergy is a reaction that occurs when metal dissolves due to perspiration and enters the body. Among various allergies, inflammation caused by contact with the skin is called "contact dermatitis." Contact dermatitis can be further subdivided into irritant contact dermatitis, which causes a sudden inflammatory reaction, and allergic contact dermatitis, which causes a gradual reaction. "Irritant contact dermatitis" can occur in most people, but "allergic contact dermatitis" develops only in those who have an allergic reaction. Substances that cause allergies are called allergens. Metal allergies are thought to be caused by the ionization of metals dissolved in sweat and body fluids, which then bind to proteins in the body. When allergens exceed the tolerance level, allergic reactions such as itching and swelling occur. This is metal allergy.
Nickel Allergy
"Nickel" is the most well-known allergen and is considered a metal with a high potential to cause allergies. It is a metal commonly used in familiar products, such as coins (50-yen coin, 100-yen coin, 500-yen coin). Symptoms of nickel allergy include itching and erythema on the skin. If the condition progresses, it may lead to vesicles and, if further aggravated, suppuration. Additionally, be aware that some jewelry may contain trace amounts of nickel, even if it is labeled as "nickel-free."
Lead
In March 2006, the Tokyo Community Safety Bureau and the Ministry of Health, Labor and Welfare's Chemical Substances Safety Office reported that high concentrations of lead were used in low-priced accessories for children, which led to concerns about children accidentally swallowing them. While ingested lead is dangerous, lead contact with the skin does not cause harm. Precious metals (gold, platinum, silver) commonly used in jewelry do not contain lead.
Cadmium
A small amount of cadmium may be added to raw metal materials to improve the flow of the molten metal. Manufacturers have found cadmium fumes to be unhealthy, so cadmium-enhanced materials are no longer used today.
Mercury
Mercury dissolves with many other metals to form amalgams. In particular, when it comes into contact with gold products, it soaks into the gold, causing it to become cloudy and crumble. This is known as "mercury corrosion." Please note that "mercury corrosion" will occur if a liquid containing mercury adheres to jewelry.