Final answer:
The product used to remove nail stains is nail bleach (d). Nail bleach is formulated to address the discoloration on nails often caused by pigment penetration from nail polish, and it contains ingredients like hydrogen peroxide to brighten the nails.
Step-by-step explanation:
The correct product to use is d:
To remove nail stains, Nail bleach is specifically designed to address staining on the nails that may occur due to various factors, including the use of colored nail polish or exposure to substances that can discolor nails. Products like paraffin wax, cuticle cream, and hand lotion are used for moisturizing and treating the skin around the nails and do not have properties suitable for removing stains from the nail plate itself.
Nails are continuously growing and are composed of a hard protein called keratin. This protein is what gives nails their strength and rigidity. Nail stains can sometimes be caused by the pigments in nail polish, particularly darker shades, which penetrate the porous surface of the nail. Over time, this can lead to discoloration. Using a nail bleach can help to lighten and remove these stains, restoring the nails to their natural color. Nail bleach often contains ingredients like hydrogen peroxide, which has bleaching properties that can effectively clean and brighten the nails.
When using nail bleaching products, it is important to follow the instructions carefully and to use them in a well-ventilated area due to the potentially harsh chemicals involved. It's also essential to protect the skin around the nails, as bleaching agents can cause irritation.