Not synthetic, not natural, none
An optimally timed cycle that avoids desensitization will yield better results than a poorly planned, overly long cycle that results in a flattened response
Start by trying one or two of these strategies and see how you feel
Skin aging and oxidative stress: equols anti-aging effects via biochemical and molecular mechanisms
Mol Endocrinol 18:18591875 Ortega I, Sokalska A, Villanueva JA, Cress AB, Wong DH, Stener VE, Scott D, Stanley SD, Duleba AJ (2013) Letrozole increases ovarian growth and Cyp17a1
It is made of 3 types of molecules, which are also called amino acids, that combine together to make proteins