Geranium. Add geranium oil to a bath to help ease swelling associated with fluid retention. It also reduces swelling on cold sores, acne and bug bites. The oil, also known as rose geranium oil, derives from the flowering herb Pelargonium graveolens.
Back to Index. Hyperpigmentation is a common, usually harmless condition in which patches of skin become darker in color than the normal surrounding skin. This darkening occurs when an excess of melanin, the brown pigment that produces normal skin color, forms deposits in the skin.ack to Index. Hyperpigmentation is a common, usually harmless condition in which patches of skin become darker in color than the normal surrounding skin. This darkening occurs when an excess of melanin, the brown pigment that produces normal skin color, forms deposits in the skin.
Pigmentation is the coloring of a person's skin. For various reasons, a person's skin may change color, becoming darker (hyperpigmentation) or lighter (hypopigmentation).Hyperpigmentation in skin is caused by an increase in melanin, the substance in the body that is responsible for color (pigment) and is produced by melanocytes at the lower layer of the epidermis.igmentation is the coloring of a person's skin. For various reasons, a person's skin may change color, becoming darker (hyperpigmentation) or lighter (hypopigmentation).