Whether 18K gold plated jewelry is hypoallergenic depends mainly on two factors: the quality and thickness of the gold plating layer, and how the base metal is formulated. A thick, well-applied plating acts as a barrier between your skin and the underlying metal, which significantly reduces the risk of skin irritation for most wearers.
At Hengdian (HD) Jewelry, our 18K gold plating standard applies 0.1 to 0.3 micron of 18K gold over polished brass. This creates a smooth, sealed surface that minimizes direct contact with the brass alloy beneath. Our jewelry is also lead-free, and nickel — when present in the alloy — is added in controlled amounts with nickel release kept within REACH regulatory limits.
Thicker plating (our standard: 0.1–0.3 micron) provides a more durable barrier. Thin or uneven plating wears off faster, exposing the base metal to skin contact and increasing irritation risk.
Brass is a common base for fashion jewelry. The key is controlling trace elements like nickel and ensuring the finished piece passes compliance testing such as REACH, CE, and SGS certification.
Reputable manufacturers test nickel release rates against international standards. HD Jewelry products undergo SGS factory audits and comply with REACH/CE/SGS requirements for nickel release limits and lead-free formulation.
If you have a known severe nickel allergy, even well-plated jewelry may cause a reaction over time as the plating gradually wears from daily use. We recommend:
For most B2B wholesale buyers and their end customers, HD Jewelry's 18K gold plated pieces are comfortably wearable for everyday use when cared for properly.
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