._Essential_oil.jpg){kind=link}
Essential oils are used for scent, cosmetics, massage products and household fragrance. Health claims need a separate question: has that exact oil, method and outcome been tested properly?
Fragrance and atmosphere
Diffusers, reeds, scented ceramics and personal inhalers release aromatic compounds into the air. A person may enjoy the smell or associate it with a routine, but that experience is not proof of medical treatment.
NCCIH defines aromatherapy as a complementary approach using plant essential oils, most often by inhalation or diluted skin application. It also notes that rigorous research is limited for many promoted outcomes.
Skin and cosmetic products
Essential oils may provide fragrance in soaps, lotions, bath products and massage blends. A finished cosmetic has a formulation and intended use. A bottle of concentrated oil is not the same product.
The FDA warns that plant-derived fragrance materials can still be toxic, irritating or allergenic. Avoid direct use on skin unless the product gives suitable instructions for that purpose.
Health and wellbeing claims
Evidence questions must be precise. “Lavender helps sleep” could refer to perceived sleep quality, diagnosed insomnia, one night in hospital or long-term use at home. Those are different outcomes.
The Evidence Matrix separates each oil-and-outcome pairing. A promising finding for one claim cannot be transferred to another oil, route or condition.
Household uses
Essential oils are also promoted for cleaning, insects and air purification. Laboratory activity does not automatically show that a home recipe works safely in a kitchen, bedroom or occupied room.
Use a registered or properly labelled product when pest control or disinfection matters. Keep concentrated oils away from food, children and animals.
How to use this site
- Oil Profiles identify the plant, extraction method and traditional uses.
- Condition guides organise claims around one reader need.
- Claim Reviews examine one oil and one outcome in detail.
- Practical guides cover products, suppliers and everyday use.