Both Cold Sour toothpaste and Comfort Toothpaste have some anti-sensitivity effect, but in terms of clinical efficacy, Comfort Toothpaste has a better anti-sensitivity effect and is more specialized. This is because it was developed mainly for patients with dentin allergy. To use both toothpastes in the correct way, different from the usual brushing, you have to squeeze the toothpaste onto your finger, apply it to the surface of the teeth in the sensitive area and wait about 10 minutes before brushing and rinsing normally. Anti-sensitive toothpastes are not recommended for long periods of time and can be replaced with normal toothpaste once the sensitivity is eliminated. Most of the reason why teeth are sensitive is because patients like to eat too hard foods that cause excessive tooth wear, and they are advised to change their bad habits.