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.
Hyperpigmentation is a condition that causes the skin to darken. It can occur in small patches or cover large areas of the body. It can also affect the entire body. Hyperpigmentation is usually not harmful.But it can be a symptom of another medical condition. They are related to excess sun exposure over time. 2  They generally appear as spots of hyperpigmentation on areas frequently exposed to the sun, such as the hands and face. 3  Post-inflammatory hyperpigmentation is a result of prior injury to the skin (American College of Osteopathic Dermatology).