This entirely depends on each individual.  If you have highly sensitive skin, we advise caution to anyone wearing any kind of metals on their skin for prolonged periods. If you are aware that you have sensitive skin and are prone to reactions or have had green skin tarnishing before we advise you not to purchase fashion jewellery and we take no responsibility or liability for any reactions that may take place; It is the responsibility of the customer to ensure all precautions are taken as we are unable to know each individual's allergies and sensitivities.   All gold plated rings will have traces of copper as this contributes to the colour (Yellow Gold and Rose Gold). If you have had greening before we highly suggest you purchase 925 Sterling Silver instead of gold plated rings. The metal composition will be stated on the product page, please read it carefully before purchasing. If you decide you want to purchase the brass version (gold plated rings) and if your hands are high in acidity, you may experience some oxidisation (slight greening). (Please note that another culprit is the chemicals present in hand cream which can react with your jewellery so you must let your skin dry before putting on any jewellery). This is common with even high-end jewellery. If this is the case for you, you may wish to go for 925 Sterling Silver jewellery. Alternatively, you can prevent oxidisation by adding a layer of clear nail varnish or polymer coating inside the ring.  We are unable to refund you if your skin turns green as this entirely depends on the individual.