What should you consider when choosing a skin barrier toner?

I am considering changing the toner.
I often hear that skin barrier toners are good, but I'm not really sure which one to choose.
I’ve heard that using a skin barrier toner makes the skin really moisturized and smooth, but I’m wondering if that is just temporary hydration or if it actually strengthens the skin barrier in the long term.
Since toner is a product used every day, I sometimes hesitate to choose the wrong one, fearing it might cause irritation.
So when I look at the ingredient list, I am drawn to phrases like 'fragrance-free,' 'hypoallergenic,' and 'mildly acidic,' but I am not convinced how much these actually help the skin barrier.
I am also confused about whether the first thing to look at when choosing a skin barrier toner is the ingredients, or the formulation or absorption rate.
I've also heard that it creates synergy when used with other products like serums or creams, but I'm worried that if I get the order or combination wrong, my skin might actually become more sensitive.
Especially in dry seasons like this, I’ve heard that toner alone isn’t enough, so I’d like to know how to use a skin barrier toner to maintain its moisturizing and soothing effects for a long time.
Since I have sensitive skin that turns red immediately with even the slightest irritation, I am concerned about whether it is okay to use a skin barrier toner every day or if I need to adjust my usage periodically.
Ultimately, I want to know if a skin barrier toner is simply a product that supplies moisture, or if it plays a role in making the skin itself healthy.
I have heard that if you use it consistently for a long time, your skin texture improves and your tone becomes much clearer, so I would like to hear stories from people who have actually experienced such changes.
At a time like now, when my skin is sensitive and easily turns red, I would like to hear your advice on which skin barrier toner to choose and how to use it to make my skin feel even a little bit more comfortable.