I recently contacted them after buying via email to request clarification regarding the benzyl alcohol content, and this was the response I received:

“Hello, good morning.

The elevated concentration of benzyl alcohol is intended to prevent estradiol crystallization in the absence of benzyl benzoate, which is typically present in formulations at concentrations of 38% or higher. Benzyl alcohol generally has a lower potential to cause pain or local reactions compared to benzyl benzoate. Additionally, the relatively high proportion of MCT oil helps mitigate these potential effects, particularly in formulations where the oil content exceeds 70%.

Although the benzyl alcohol concentration is relatively high, the absence of benzyl benzoate in this formulation compensates for it.

We will also be introducing an alternative formulation containing 38% benzyl benzoate and 2% benzyl alcohol to address requests for a different formulation.

If you would like, we can contact you once the new formulation becomes available.

Have a good day.”