Lily of the valley is a plant with a strong scent that contains toxic cardiac glycosides, which are poisonous. The cardiac glycosides in lily-of-the-valley affect the heart and can cause dangerous irregular heartbeat. People use lily-of-the-valley for heart problems including heart failure, irregular heartbeat, and other conditions, but there is no good scientific evidence to support these uses. Lily-of-the-valley might also be unsafe and is likely unsafe when taken by mouth while pregnant or breastfeeding. It contains chemicals that can make heart disease worse and is unsafe to use if you have low potassium levels. Lily of the valley is used for urinary tract infections, kidney stones, weak contractions in labor, epilepsy, fluid retention, strokes and resulting paralysis, eye infections, and leprosy.

Lily of the valley is also used in skin care blends for bringing freshness and vitality to the skin, and at the same time helping heal minor scars, sores, eczema, and surface wounds. It is deeply skin nourishing and helpful in managing minor pain and inflammation, reducing the presence of unwanted bacterial activity, and helping to ease unwanted muscle spasms. However, it is important to note that lily of the valley is poisonous and can cause serious harm if ingested.

In summary, the positive uses of lily of the valley include its potential benefits in skin care blends, while the negative effects include its toxicity and potential harm to the heart, low potassium levels, and pregnancy and breastfeeding.

There is no information available on the ingredients or materials of lily of the valley beyond its toxic cardiac glycosides.