Hydrosols are sometimes referred to as hydrolats, distillate waters or floral waters.
Explained as simply as possible, a hydrosol is the aromatic water that remains after steam-distilling or hydro-distilling botanical material such as lavender.
Expert hydrosol distillers, specifically distill plants for the resulting hydrosol that they produce. This can result in hydrosols with superior aroma and therapeutic benefit. Most hydrosols, however, are produced simply as a result of essential oil distillation.
The plant matter used in the distillation process imparts the hydrosol with the water-soluble aromatic and therapeutic properties of the plant.
Unlike essential oils that should be diluted prior to application to the skin, hydrosols are much gentler than their essential oil counterparts and can generally be used directly on the skin without further dilution.
Hydrosols can be used in place of water in creating natural fragrances, lotions, creams, facial toners and other skin care products. They can also be added to the bath, and used on their own as a light cologne or body spray. Hydrosol can be added to finger bowls for elegant, romantic dinners.
Examples of botanicals that are available as hydrosols are Rose, Roman Chamomile, Neroli and Lavender.
Sometimes water simply blended with essential oils are sold as floral waters or improperly classified as hydrosols. It is always wise to ask vendors for details about the hydrosols that they sell to ensure that what you are purchasing is a true hydrosol as defined here.
Helpful Sources of Information About Hydrosols are:
Hydrosols: The Next Aromatherapy
Author: Suzanne Catty, ISBN: 0-89281-946-4
Understanding Hydrolats: The Specific Hydrosols for Aromatherapy: A Guide for Health Professionals
Authors: Len Price and Shirley Price, ISBN: 0443073163 / 978-0443073168
375 Essential Oils and Hydrosols
Author: Jeanne Rose, ISBN: 1-883319-89-7