retinol ester?? is it different?

Hi there ive reading about retinol ester and wondering if its really all that different from regular retinol. I have sensitive skin (im 54) and im using Roc sensitive about every other day. I can’t seem to work up to every day so id like a more sensitive alternative. I saw that Luna sleeping night oil has the retinol ester and its supposed to be more gentle. Love to hear your thought on all of this thanks so much laura