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.
Other forms of hyperpigmentation can result from residue caused by acne. Because of the dark spots that are common of acne the skin may be left scarred. The same can be said of injuries that leave the skin with scars. Freckles are also a form of hyperpigmentation.