Please refer to Yarrow Essential Oil safety sheet here   General Safety on Essential oils Since these are powerful substances, they should be handled safely. Please follow these recommended guidelines for general safety tips: 1) NEVER APPLY UNDILUTED TO THE SKIN ( straight from the bottle to the skin) 2) NEVER TAKE INTERNALLY 3) ALWAYS USE CAUTION WITH PREGNANT OR LACTATING WOMEN 4) ALWAYS USE CAUTION WITH YOUNG CHILDREN AND PETS Usage sheets are available for your further information. Please respect the Oils and use them wisely. Essential oils can be used by diffusing in the air, inhalation, blending in baths, compresses, perfumes and of course massage. Precious oils are available in their pure form but they are very expensive per ml. When we dilute these oils it makes it far more cost effective for you the consumer. It does not change the quality of the oil, in fact, some say it smells better when it is diluted.  If you do not see what you are looking for please ask if we can bring it in for you.