The TIRTIR SOS Serum is a calming, skin-repairing serum that’s great for stressed or irritated skin. It has a watery-gel texture that absorbs quickly and instantly soothes redness or inflammation. It’s especially helpful when my skin barrier feels compromised, or after using active ingredients like exfoliants or retinol. It feels lightweight but effective, and over a few days, I notice my skin looks calmer and healthier. It pairs well with other products and doesn’t pill under moisturizer. A good emergency serum when your skin needs extra TLC.