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There’s a new study out from the New England Journal of Medicine, showing that “repeated topical use of products containing lavender oil and/or tea tree oil may cause prepubertal gynecomastia, a rare condition resulting in enlarged breast tissue in boys prior to puberty, and for which a cause is seldom identified.”

Part of the reason we keep our products fragrance-free is because of the growing concern that essential oils — even ones as seemingly benign as lavender and tea-tree oils — may carry a significant enough level of estrogenic activity that they affect children. This new study is an indication of the importance of clean and simple formulations in any product for children. Therefore, we have creating clean-smelling baby products without adding anything to the mix, and will continue to do so, especially in light of studies like this.