Young Living sets the standard for purity and authenticity of essential oils by carefully monitoring every step of the production of oils from beginning to end through their unique Seed to Seal® process. This unsurpassed commitment to quality means that you can be confident that the Young Living essential oils and oil-infused products you use in your home are safe and effective. . I trust their essential oils above all others because they are pure and unadulterated and are manufactured for therapeutic use not just for smell.