Lenzetto is known for being weaker than other transdermal products.
My advice would be don't fear oral estrogen, the difference in thrombotic risk for healthy users is of the order of one extra case per 4000-5000 per year (vinagridova et al) ie not clinically significant.
Not everyone likes, wants or is able to absorb transdermal estrogen and products often influence when you can exercise, wash or swim etc.
I am happy on oral treatment, I like the convenience and reliability.
The mouth was designed to get things in to the body, the skin's actual purpose is to keep things out.
Transdermal drug delivery is a nice theoretical concept but many people simply do not derive the intended benefits from it due to wide individual variability in absorption.