Please let me know what is effective for sensitive skin.

I was born with much more sensitive skin than others, so choosing even a single cosmetic product is a huge undertaking. If a product contains even slightly harsh ingredients, my sensitive skin immediately flares up and itches, often causing me to lose sleep all night. Recently, perhaps due to environmental pollution, my skin seems to have become even more sensitive, so I am considering switching my entire skincare routine, from cleanser to moisturizer. People with sensitive skin suffer immensely every time the seasons change, causing them immense stress. If anyone knows of a clinic specializing in sensitive skin or a skincare line that provides sufficient hydration without irritation, I would appreciate your recommendations. I look forward to receiving valuable advice from those who deeply understand the struggles of those with sensitive skin.