Follow your manufacturer's instructions to restore the lustre to your jewellery:

1. Store your jewellery with care
2. Do not allow pieces to become tangled together
3. Avoid exposing jewellery to high temperatures
4. Avoid prolonged exposure to perfume or skincare products

Skincare products and perfume can contain chemicals which accelerate the tarnishing process.

At best thse products can cause your jewellery's colours and brightness to fade, at worst they can destroy the lustre of gemstones.