Some of the most common solvents and conditioning agents are propylene glycol and butylene glycol, with similar properties. While these materials are normally petroleum derived, the propylene glycol and butylene glycol used in Tom’s of Maine are 100% naturally derived. Another common solvent is 1,3-propanediol, similar to propylene glycol.
Tom’s of Maine recognizes that no two people are alike, and even with naturally derived ingredients, some individuals may develop an allergic reaction that is unique to them. As with any product, be sure to discontinue use if you experience discomfort or other indications that the product may not be appropriate for your individual body chemistry.