An essential oil hydrosol is scented water produced during the process of steam-distilling plant material to make essential oils. What is a hydrosol used for? These aromatherapy waters have some of the same benefits as essential oils but are more gentle, and you can sometimes use them when essential oils aren't advisable.
Also, some distillers focus only on producing plant waters (also called hydrolates, hydrolats, or distillates) without producing essential oils. These distillates are not the same thing as floral waters or flower waters (such as the popular rose water), which are made in a different way and do not have the same benefits as distillates.
Possibly the most definite book available on this topic is Suzanne Catty's Hydrosols: The Next Aromatherapy.
Just as you want to use the best quality essential oils for maximum benefit, you also want to use the best quality distillates. Aromatherapy waters are more easily contaminated in the production and shipping process than essential oils, so finding reputable suppliers is important.
Another important thing to know is
that mixing essential oils and water together doesn't create a
distillate, even though some websites claim to tell you how to make a hydrosol by adding essential oils to water. To make a hydrosol, you need the same type of distillation equipment required to make essential oils. For distillers, Ann Harman's Harvest To Hydrosol is a great reference.
So, if you are looking at a floral water, for example, rose water, and the ingredient list is purified water and natural rose oil, it's not a hydrosol and doesn't have the same properties. Other products on the market that may not be real distillates are fruit-scented waters (orange, lemon, and so forth). Fruit essential oils are most often cold-pressed (with a few exceptions) from fruit skins, not distilled, so no aromatherapy water is produced. Another example is jasmine—this oil is solvent-extracted, not distilled, so, again, no hydrolat.
Uses for hydrosols include:
One use of aromatherapy waters is in making natural lotions, creams, and other skin care products. The following list shows some of the best hydrosols for skin:
Can you drink hydrosol?
Yes, according to Catty, as long as it's therapeutic-grade. Although she provides many suggestions for internal use, the topic is too big to get into in this article. Here's a recipe she recommends for headaches:
Hydrolats are also commonly used in cooking.
How Long Do Hydrosols Last?
How long a distillate will last depends on the specific hydrosol, its pH level, where and how it was distilled, and how it was bottled, handled, and stored after distillation, according to AromaWeb.
Hydrolats are more fragile than essential oils and don't last as long. Storing the waters in the refrigerator or a dark, cool place will prolong their life. Although some plant waters contain preservatives to lengthen shelf life, purists believe these lower quality.
When you buy, check the label for a distillation date and country of origin. The fresher, the better. The less distance a product has traveled, the less likely it has been handled or stored improperly. Organic is best.
Where to Buy Hydrosols?
Many companies that sell essential oils also sell distillates, and they are also available from some artisan makers.