Rose oil in geraniol, the main constituent of rose oil. Some of these "rose oils" are up to 90% geranium or palmarosa to 10% rose. This is referred to as "extending" the rose fragrance. This may be done to compensate for chemotype, e.g. Bulgarian distilled rose oil is naturally low in phenylethanol, and Ukrainian or Russian rose oil is naturally high in phenylethanol. Pure rose oil should not be used directly on the skin, as it can cause allergic reactions such as red skin and spots. Rose oil Rose oil (rose otto, attar of rose, attar of roses or rose essence) is
Essential oil purity, and sometimes related to the toxicity of specific chemical components of the oil. Many essential oils are designed exclusively for their aroma-therapeutic quality; these essential oils generally should not be applied directly to the skin in their undiluted or "neat" form. Some can cause severe irritation, provoke an allergic reaction and, over time, prove hepatotoxic. Some essential oils, including many of the citrus peel oils, are photosensitizers, increasing the skin's vulnerability to sunlight. Industrial users of essential oils should consult the safety data sheets (SDS) to determine the hazards and handling requirements of particular oils. Even certain therapeutic grade