If you have the redness and pimples of rosacea, you may want to use rosacea aromatherapy to help deal with the problem.
Skin with rosacea is already sensitive, and some sources recommend using essential oil in a one percent or less dilution (that is, one drop of essential oil in 99 drops of carrier oil or 6 drops essential oil in 2 tablespoons carrier oil). But you can experiment, testing what works best for you without causing irritation.
Because rosacea is an inflammatory skin condition, look for essential
oils that calm inflammation. According to Dr. Josh Axe (who has a long article on dealing with rosacea), essential oils found to relieve skin inflammation and nourish sensitive skin are:
Axe recommends blending three drops of essential oil with 1/2 teaspoon of carrier oil. Apply this blend to the affected areas two or three times a day. Note this dilution is higher that the one percent mentioned above—use your good judgement in choosing a dilution. If in doubt, start with a lower dilution. You can always move to a higher dilution if you're confident it's OK for your skin.
Other essential oils that might help include:
Commonly recommended carrier oils are sweet almond and jojoba. Other carrier oils that may help relieve rosacea include tamanu, evening primrose, and coconut. Some people find aloe vera gel works well.
Combine ingredients in a two-ounce spray bottle:
Shake well. Lightly mist affected areas on your face several times a day, avoiding eyes and mouth.
Source: Essential Oils For Healing
If your skin is too sensitive for even highly diluted essential oils,
consider using aromatherapy hydrosols. Hydrosols are the by-product of
steam distilling plant materials to make essential oils. Hydrosols are
very gentle and can provide some relief.
Try one of these hydrosols: German chamomile, geranium, lavender, neroli (orange blossom), or rose. Simply splash the hydrosol on your face as a toner.
Don't use alcohol or soap on skin affected by rosacea, and don't exfoliate.
For more in-depth information, including several aromatherapy recipes, see Aromatherapy for Rosacea at the East West School for Herbal and Aromatic Studies.