serenity, I've never had rosacea, but it is intriguing to me as to what it really is and what causes it, especially because I've read different things about it.
You mention acids...I can see that acids (and it is interesting when & how they came on the scene) may be more harmful than helpful, especially for younger skin.
When I was little I never knew of anyone or even saw anyone with irritated skin. (My Mom and all my aunts being the Ponds generation.) I'm sure there is a lot of confusing "information" and methods now that marketing of skincare products is so pervasive. It is also interesting that what was good for hundreds & thousands of years before is no longer accepted by many.
Now that you're on to something about your own skin, I hope you can find simpler skincare practices, where you don't have any more skin aggravation.